AudioCodes Mediant 4000 SBC User manual

User's Manual
AudioCodes Mediant™ Family of Session Border Controllers (SBC)
Mediant 4000 SBC
Version 7.2

Version 7.2 3 Mediant 4000 SBC
User's Manual Contents
Table of Contents
1Introduction .......................................................................................................25
1.1 Product Overview...................................................................................................25
1.2 Typographical Conventions....................................................................................26
1.3 Getting Familiar with Configuration Concepts and Terminology............................27
1.3.1 SBC Application.......................................................................................................27
Getting Started with Initial Connectivity................................................................31
2Introduction .......................................................................................................33
3Default OAMP IP Address.................................................................................35
4Configuring VoIP LAN Interface for OAMP .....................................................37
4.1 Web Interface.........................................................................................................37
4.2 CLI..........................................................................................................................39
Management Tools..................................................................................................41
5Introduction .......................................................................................................43
6Web-Based Management..................................................................................45
6.1 Getting Acquainted with the Web Interface............................................................45
6.1.1 Computer Requirements..........................................................................................45
6.1.2 Accessing the Web Interface...................................................................................46
6.1.3 Areas of the GUI......................................................................................................47
6.1.4 Accessing Configuration Pages from Navigation Tree............................................49
6.1.5 Configuring Stand-alone Parameters......................................................................51
6.1.6 Configuring Table Parameters.................................................................................52
6.1.6.1 Adding Table Rows..................................................................................53
6.1.6.2 Modifying Table Rows..............................................................................55
6.1.6.3 Deleting Table Rows................................................................................55
6.1.6.4 Invalid Value Indications ..........................................................................56
6.1.6.5 Viewing Table Rows.................................................................................58
6.1.6.6 Sorting Tables by Column........................................................................59
6.1.6.7 Changing Index Position of Table Rows..................................................59
6.1.6.8 Searching Table Entries...........................................................................60
6.1.7 Searching for Configuration Parameters.................................................................61
6.1.8 Getting Help.............................................................................................................62
6.1.9 Logging Off the Web Interface.................................................................................62
6.2 Customizing the Web Interface..............................................................................62
6.2.1 Replacing the Corporate Logo.................................................................................62
6.2.1.1 Replacing the Corporate Logo with an Image..........................................63
6.2.1.2 Replacing the Corporate Logo with Text..................................................64
6.2.2 Customizing the Product Name...............................................................................65
6.2.3 Customizing the Favicon .........................................................................................65
6.2.4 Creating a Login Welcome Message.......................................................................67
6.3 Configuring Additional Management Interfaces.....................................................67
6.4 Configuring Management User Accounts ..............................................................69
6.5 Displaying Login Information upon Login...............................................................74

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6.6 Viewing Logged-In User Information......................................................................75
6.7 Configuring Web Session and Access Settings.....................................................75
6.8 Changing Login Password for Administrator and Monitor Users ...........................76
6.9 Configuring Secured (HTTPS) Web.......................................................................77
6.10 Web Login Authentication using Smart Cards .......................................................78
6.11 Configuring Web and Telnet Access List...............................................................79
7CLI-Based Management....................................................................................81
7.1 Enabling CLI...........................................................................................................81
7.1.1 Enabling Telnet for CLI............................................................................................81
7.1.2 Enabling SSH with RSA Public Key for CLI.............................................................82
7.2 Configuring Maximum Telnet/SSH Sessions.........................................................84
7.3 Establishing a CLI Session ....................................................................................84
7.4 Viewing Current CLI Sessions ...............................................................................85
7.5 Terminating a User's CLI Session..........................................................................86
7.6 Configuring Displayed Output Lines in CLI Terminal Window ...............................86
8SNMP-Based Management...............................................................................87
8.1 Disabling SNMP.....................................................................................................87
8.2 Configuring SNMP Community Strings..................................................................87
8.3 Configuring SNMP Trap Destinations with IP Addresses ......................................89
8.4 Configuring an SNMP Trap Destination with FQDN ..............................................91
8.5 Configuring SNMP Trusted Managers...................................................................91
8.6 Enabling SNMP Traps for Web Activity..................................................................92
8.7 Configuring SNMP V3 Users..................................................................................92
9INI File-Based Management..............................................................................95
9.1 INI File Format .......................................................................................................95
9.1.1 Configuring Individual ini File Parameters...............................................................95
9.1.2Configuring Table ini File Parameters.....................................................................95
9.1.3 General ini File Formatting Rules............................................................................97
9.2 Configuring an ini File ............................................................................................97
9.3 Loading an ini File to the Device............................................................................98
9.4 Secured Encoded ini File.......................................................................................98
9.5 Configuring Password Display in ini File................................................................98
9.6 INI Viewer and Editor Utility .................................................................................100
General System Settings ......................................................................................101
10 Configuring SSL/TLS Certificates..................................................................103
10.1 Configuring TLS Certificate Contexts...................................................................103
10.2 Assigning CSR-based Certificates to TLS Contexts............................................107
10.3 Viewing Certificate Information ............................................................................110
10.4 Assigning Externally Created Private Keys to TLS Contexts...............................111
10.5 Generating Private Keys for TLS Contexts..........................................................112
10.6 Creating Self-Signed Certificates for TLS Contexts.............................................113
10.7 Importing Certificates into Trusted Certificate Store ............................................114
10.8 Configuring Mutual TLS Authentication................................................................116

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10.8.1 TLS for SIP Clients................................................................................................116
10.8.2 TLS for Remote Device Management...................................................................116
10.9 Configuring TLS Server Certificate Expiry Check................................................117
11 Network............................................................................................................119
11.1 Building and Viewing your Network Topology......................................................119
11.2 Configuring Physical Ethernet Ports ....................................................................122
11.3 Configuring Ethernet Port Groups........................................................................125
11.4 Configuring Underlying Ethernet Devices............................................................127
11.5 Configuring IP Network Interfaces .......................................................................129
11.5.1 Assigning NTP Services to Application Types ......................................................134
11.5.2 IP Interfaces Table Configuration Guidelines........................................................134
11.5.3 Networking Configuration Examples .....................................................................134
11.5.3.1 One VoIP Interface for All Applications................................................. 135
11.5.3.2 VoIP Interface per Application Type...................................................... 135
11.5.3.3 VoIP Interfaces for Combined Application Types ................................. 136
11.5.3.4 VoIP Interfaces with Multiple Default Gateways................................... 137
11.6 Configuring Static IP Routes................................................................................137
11.6.1 Configuration Example of Static IP Routes ...........................................................140
11.6.2 Troubleshooting the Static Routes Table ..............................................................141
11.7 Network Address Translation Support .................................................................141
11.7.1 Device Located behind NAT..................................................................................141
11.7.1.1 Configuring NAT Translation per IP Interface....................................... 142
11.7.2 Remote UA behind NAT........................................................................................144
11.7.2.1 SIP Signaling Messages....................................................................... 144
11.7.2.2 Media (RTP/RTCP/T.38)....................................................................... 145
11.8 Configuring Quality of Service..............................................................................148
11.8.1 Configuring Class-of-Service QoS.........................................................................149
11.8.2 Configuring DiffServ-to-VLAN Priority Mapping.....................................................150
11.9 Configuring ICMP Messages ...............................................................................151
11.10DNS......................................................................................................................152
11.10.1Configuring the Internal DNS Table.......................................................................152
11.10.2Configuring the Internal SRV Table.......................................................................154
11.11Robust Receipt of Media Streams by Media Latching.........................................156
11.12Multiple Routers Support......................................................................................158
12 Date and Time..................................................................................................159
12.1 Configuring Automatic Date and Time using SNTP.............................................159
12.2 Configuring Date and Time Manually...................................................................160
12.3 Configuring the Time Zone...................................................................................161
12.4 Configuring Daylight Saving Time........................................................................162
General VoIP Configuration..................................................................................163
13 Security............................................................................................................165
13.1 Configuring Firewall Settings ...............................................................................165
13.2 Configuring General Security Settings.................................................................170
13.3 Intrusion Detection System..................................................................................171
13.3.1 Enabling IDS..........................................................................................................172
13.3.2 Configuring IDS Policies........................................................................................172

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13.3.3 Assigning IDS Policies...........................................................................................176
13.3.4 Viewing IDS Alarms...............................................................................................178
14 Media................................................................................................................181
14.1 Configuring Voice Settings...................................................................................181
14.1.1 Configuring Voice Gain (Volume) Control .............................................................181
14.1.2 Configuring Echo Cancellation..............................................................................181
14.2 Fax and Modem Capabilities................................................................................183
14.2.1 Fax/Modem Operating Modes...............................................................................183
14.2.2 Fax/Modem Transport Modes ...............................................................................184
14.2.2.1 T.38 Fax Relay Mode............................................................................ 184
14.2.2.2 G.711 Fax / Modem Transport Mode.................................................... 186
14.2.2.3 Fax Fallback.......................................................................................... 187
14.2.2.4 Fax/Modem Bypass Mode .................................................................... 188
14.2.2.5 Fax / Modem NSE Mode....................................................................... 189
14.2.2.6 Fax / Modem Transparent with Events Mode....................................... 190
14.2.2.7 Fax / Modem Transparent Mode........................................................... 190
14.2.2.8 RFC 2833 ANS Report upon Fax/Modem Detection............................ 191
14.2.3 V.34 Fax Support...................................................................................................191
14.2.3.1 Bypass Mechanism for V.34 Fax Transmission.................................... 192
14.2.3.2 Relay Mode for T.30 and V.34 Faxes................................................... 192
14.2.4 V.152 Support........................................................................................................193
14.3 Configuring RTP/RTCP Settings..........................................................................193
14.3.1 Configuring the Dynamic Jitter Buffer....................................................................193
14.3.2 Configuring RFC 2833 Payload.............................................................................195
14.3.3 Configuring RTP Base UDP Port...........................................................................195
14.4 Event Detection and Notification using X-Detect Header.....................................196
14.4.1 Detecting Answering Machine Beeps....................................................................197
14.4.2 SIP Call Flow Examples of Event Detection and Notification................................198
14.5 Answering Machine Detection (AMD)..................................................................200
14.5.1 Configuring AMD ...................................................................................................202
14.6 Automatic Gain Control (AGC).............................................................................203
14.7 Configuring Media (SRTP) Security.....................................................................204
14.7.1 SRTP using DTLS Protocol...................................................................................207
15 Services ...........................................................................................................209
15.1 DHCP Server Functionality..................................................................................209
15.1.1 Configuring the DHCP Server ...............................................................................209
15.1.2 Configuring the Vendor Class Identifier.................................................................214
15.1.3 Configuring Additional DHCP Options...................................................................215
15.1.4 Configuring Static IP Addresses for DHCP Clients...............................................217
15.1.5 Viewing and Deleting DHCP Clients......................................................................218
15.2 SIP-based Media Recording................................................................................219
15.2.1 Enabling SIP-based Media Recording...................................................................224
15.2.2 Configuring SIP Recording Rules..........................................................................225
15.2.3 Using Conditions for Starting a SIPRec Session...................................................227
15.2.4 Configuring SIP User Part for SRS........................................................................228
15.2.5 Interworking SIP-based Media Recording with Third-Party Vendors....................228
15.2.5.1 Genesys................................................................................................ 228
15.2.5.2 Avaya UCID........................................................................................... 228
15.3 RADIUS-based Services......................................................................................229
15.3.1 Enabling RADIUS Services ...................................................................................229
15.3.2 Configuring RADIUS Servers................................................................................229
15.3.3 Configuring Interface for RADIUS Communication...............................................232

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15.3.4 Configuring RADIUS Packet Retransmission........................................................232
15.3.5 Configuring the RADIUS Vendor ID ......................................................................233
15.3.6 RADIUS-based Management User Authentication ...............................................233
15.3.6.1 Setting Up a Third-Party RADIUS Server ............................................. 234
15.3.6.2 Configuring RADIUS-based User Authentication.................................. 235
15.3.6.3 Securing RADIUS Communication ....................................................... 237
15.3.6.4 RADIUS-based User Authentication in URL......................................... 237
15.3.7 RADIUS-based CDR Accounting ..........................................................................237
15.4 LDAP-based Management and SIP Services......................................................237
15.4.1 Enabling the LDAP Service...................................................................................239
15.4.2 Enabling LDAP-based Web/CLI User Login Authentication and Authorization.....239
15.4.3 Configuring LDAP Server Groups .........................................................................240
15.4.4 Configuring LDAP Servers.....................................................................................242
15.4.5 Configuring LDAP DNs (Base Paths) per LDAP Server........................................245
15.4.6 Configuring the LDAP Search Filter Attribute........................................................246
15.4.7 Configuring Access Level per Management Groups Attributes ............................247
15.4.8 Configuring the Device's LDAP Cache..................................................................249
15.4.8.1 Refreshing the LDAP Cache................................................................. 251
15.4.8.2 Clearing the LDAP Cache..................................................................... 253
15.4.9 Configuring Local Database for Management User Authentication......................253
15.4.10LDAP-based Login Authentication Example..........................................................255
15.4.11Enabling LDAP Searches for Numbers with Characters.......................................259
15.4.12AD-based Routing for Microsoft Skype for Business ............................................259
15.4.12.1Querying the AD and Routing Priority................................................... 260
15.4.12.2Configuring AD-Based Routing Rules................................................... 263
15.5 Least Cost Routing...............................................................................................265
15.5.1 Overview................................................................................................................265
15.5.2 Configuring LCR....................................................................................................267
15.5.2.1 Configuring Cost Groups....................................................................... 267
15.5.2.2 Assigning Cost Groups to Routing Rules.............................................. 270
15.6 Remote Web Services .........................................................................................271
15.6.1 Configuring Remote Web Services .......................................................................271
15.6.1.1 Configuring Remote HTTP Hosts.......................................................... 275
15.6.2 Enabling Topology Status Services.......................................................................277
15.6.3 Centralized Third-Party Routing Server.................................................................278
15.6.4 Configuring QoS-Based Routing by Routing Server.............................................281
15.7 HTTP-based Proxy Services................................................................................282
15.7.1 Enabling the HTTP Proxy Application ...................................................................283
15.7.2 Debugging Remote HTTP Services ......................................................................283
15.7.3 Configuring HTTP Interfaces.................................................................................284
15.7.4 Configuring HTTP Proxy Services.........................................................................285
15.7.4.1 Configuring HTTP Proxy Hosts............................................................. 287
15.7.5 Configuring an HTTP-based OVOC Service.........................................................289
15.8 E9-1-1 Support for Microsoft Skype for Business................................................291
15.8.1 About E9-1-1 Services...........................................................................................291
15.8.2 Microsoft Skype for Business and E9-1-1 .............................................................292
15.8.2.1 Gathering Location Information of Skype for Business Clients for 911
Calls 293
15.8.2.2 Adding ELINs to the Location Information Server................................. 294
15.8.2.3 Passing Location Information to the PSTN Emergency Provider......... 295
15.8.3 AudioCodes ELIN Device for Skype for Business E9-1-1 Calls to PSTN.............296
15.8.3.1 Detecting and Handling E9-1-1 Calls.................................................... 297
15.8.3.2 Pre-empting Existing Calls for E9-1-1 Calls.......................................... 299
15.8.3.3 PSAP Callback to Skype for Business Clients for Dropped E9-1-1 Calls
299

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15.8.3.4 Selecting ELIN for Multiple Calls within Same ERL.............................. 300
15.8.4 Configuring AudioCodes ELIN Device...................................................................301
15.8.4.1 Enabling the E9-1-1 Feature................................................................. 301
15.8.4.2 Configuring the E9-1-1 Callback Timeout............................................. 301
15.8.4.3 Configuring SBC IP-to-IP Routing Rule for E9-1-1............................... 301
15.8.4.4 Viewing the ELIN Table......................................................................... 302
15.9 Microsoft Skype for Business Presence of Third-Party Endpoints.......................302
15.9.1 Configuring Skype for Business Server for Presence...........................................304
15.9.2 Configuring the Device for Skype for Business Presence.....................................305
16 Quality of Experience......................................................................................309
16.1 Reporting Voice Quality of Experience to OVOC.................................................309
16.1.1 Configuring the OVOC Server...............................................................................309
16.1.2 Configuring Clock Synchronization between Device and OVOC..........................310
16.1.3 Enabling RTCP XR Reporting to OVOC................................................................310
16.2 Configuring Quality of Experience Profiles...........................................................311
16.3 Configuring Bandwidth Profiles............................................................................316
16.4 Configuring Quality of Service Rules ...................................................................320
17 Control Network ..............................................................................................323
17.1 Configuring Media Realms...................................................................................323
17.1.1 Configuring Remote Media Subnets......................................................................326
17.1.2 Configuring Media Realm Extensions ...................................................................329
17.2 Configuring SRDs ................................................................................................331
17.2.1 Filtering Tables in Web Interface by SRD .............................................................337
17.2.2 Multiple SRDs for Multi-tenant Deployments.........................................................337
17.2.3 Cloning SRDs........................................................................................................339
17.2.4 Color-Coding of SRDs in Web Interface................................................................340
17.2.5 Automatic Configuration based on SRD................................................................341
17.3 Configuring SIP Interfaces...................................................................................341
17.4 Configuring IP Groups..........................................................................................349
17.5 Configuring Proxy Sets ........................................................................................363
17.6 Building and Viewing SIP Entities in Topology View............................................372
18 SIP Definitions.................................................................................................377
18.1 Configuring Registration Accounts.......................................................................377
18.1.1 Regular Registration Mode....................................................................................382
18.1.2 Single Registration for Multiple Phone Numbers using GIN..................................382
18.1.3 Registrar Stickiness...............................................................................................383
18.2 Configuring Proxy and Registration Parameters..................................................384
18.2.1 SIP Message Authentication Example ..................................................................384
18.3 Configuring Call Setup Rules...............................................................................386
18.3.1 Call Setup Rule Examples.....................................................................................392
19 SIP Message Manipulation .............................................................................395
19.1 Configuring SIP Message Manipulation...............................................................395
19.2 Configuring Message Condition Rules.................................................................400
19.3 Configuring SIP Message Policy Rules................................................................401
19.4 Configuring Pre-Parsing Manipulation Rules.......................................................405
20 Coders and Profiles ........................................................................................409
20.1 Configuring Coder Groups...................................................................................409

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20.1.1 Supported Audio Coders.......................................................................................411
20.1.2 Configuring Various Codec Attributes ...................................................................413
20.2 Configuring Allowed Audio Coder Groups ...........................................................414
20.3 Configuring Allowed Video Coder Groups ...........................................................417
20.4 Configuring IP Profiles .........................................................................................418
Session Border Controller Application................................................................449
21 SBC Overview..................................................................................................451
21.1 Feature List..........................................................................................................451
21.2 B2BUA and Stateful Proxy Operating Modes ......................................................452
21.3 Call Processing of SIP Dialog Requests..............................................................455
21.4 User Registration .................................................................................................457
21.4.1 Initial Registration Request Processing.................................................................457
21.4.2 Classification and Routing of Registered Users....................................................458
21.4.3 General Registration Request Processing ............................................................459
21.4.4 Registration Refreshes..........................................................................................459
21.4.5 Registration Restriction Control.............................................................................460
21.4.6 Deleting Registered Users.....................................................................................460
21.5 Media Handling....................................................................................................460
21.5.1 Media Anchoring....................................................................................................461
21.5.2 Direct Media...........................................................................................................462
21.5.3 Restricting Audio Coders.......................................................................................464
21.5.4 Coder Transcoding................................................................................................465
21.5.5 Transcoding Mode.................................................................................................468
21.5.6 Prioritizing Coder List in SDP Offer.......................................................................468
21.5.7 SRTP-RTP and SRTP-SRTP Transcoding ...........................................................469
21.5.8 Multiple RTP Media Streams per Call Session .....................................................469
21.5.9 Interworking Miscellaneous Media Handling.........................................................470
21.5.9.1 Interworking DTMF Methods................................................................. 470
21.5.9.2 Interworking RTP Redundancy............................................................. 470
21.5.9.3 Interworking RTP-RTCP Multiplexing ................................................... 471
21.5.9.4 Interworking RTCP Attribute in SDP..................................................... 471
21.5.9.5 Interworking Crypto Lifetime Field......................................................... 471
21.5.9.6 Interworking Media Security Protocols.................................................. 471
21.5.9.7 Interworking ICE Lite for NAT Traversal ............................................... 471
21.6 Fax Negotiation and Transcoding........................................................................471
21.7 Limiting SBC Call Duration...................................................................................472
21.8 SBC Authentication..............................................................................................472
21.8.1 SIP Authentication Server Functionality................................................................472
21.8.2 User Authentication based on RADIUS.................................................................473
21.9 Interworking SIP Signaling...................................................................................474
21.9.1 Interworking SIP 3xx Redirect Responses............................................................474
21.9.1.1 Resultant INVITE Traversing Device .................................................... 474
21.9.1.2 Local Handling of SIP 3xx..................................................................... 475
21.9.2 Interworking SIP Diversion and History-Info Headers...........................................476
21.9.3 Interworking SIP REFER Messages......................................................................476
21.9.4 Interworking SIP PRACK Messages .....................................................................477
21.9.5 Interworking SIP Session Timer............................................................................477
21.9.6 Interworking SIP Early Media................................................................................477
21.9.7 Interworking SIP re-INVITE Messages..................................................................480
21.9.8 Interworking SIP UPDATE Messages...................................................................480

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21.9.9 Interworking SIP re-INVITE to UPDATE................................................................481
21.9.10Interworking Delayed Offer....................................................................................481
21.9.11Interworking Call Hold............................................................................................481
21.9.12Interworking SIP Via Headers ...............................................................................482
21.9.13Interworking SIP User-Agent Headers ..................................................................482
21.9.14Interworking SIP Record-Route Headers..............................................................482
21.9.15Interworking SIP To-Header Tags in Multiple SDP Answers................................482
21.9.16Interworking In-dialog SIP Contact and Record-Route Headers...........................482
22 Enabling the SBC Application........................................................................483
23 Configuring General SBC Settings................................................................485
23.1 Interworking Dialog Information in SIP NOTIFY Messages.................................485
24 Configuring Admission Control.....................................................................487
25 Routing SBC....................................................................................................491
25.1 Configuring Classification Rules ..........................................................................491
25.1.1 Classification Based on URI of Selected Header Example...................................498
25.2 Configuring SBC IP-to-IP Routing........................................................................499
25.2.1 Configuring Rerouting of Calls to Fax Destinations...............................................511
25.2.2 Configuring Specific UDP Ports using Tag-based Routing...................................512
25.3 Configuring SIP Response Codes for Alternative Routing Reasons....................516
25.4 Configuring SBC Routing Policy Rules................................................................518
25.5 Configuring IP Group Sets...................................................................................523
26 SBC Manipulations..........................................................................................527
26.1 Configuring IP-to-IP Inbound Manipulations ........................................................529
26.2 Configuring IP-to-IP Outbound Manipulations......................................................533
26.3 Using the Proprietary SIP X-AC-Action Header...................................................539
27 Configuring Dial Plans....................................................................................541
27.1 Importing and Exporting Dial Plans......................................................................546
27.2 Creating Dial Plan Files........................................................................................549
27.3 Using Dial Plan Tags for IP-to-IP Routing............................................................550
27.3.1 Using Dial Plan Tags for Matching Routing Rules ................................................550
27.3.2 Using Dial Plan Tags for Routing Destinations .....................................................551
27.3.3 Dial Plan Backward Compatibility..........................................................................554
27.4 Using Dial Plan Tags for Outbound Manipulation................................................555
27.5 Using Dial Plan Tags for Call Setup Rules...........................................................557
27.6 Using Dial Plan Tags for Message Manipulation .................................................557
28 Configuring Malicious Signatures.................................................................559
29 Advanced SBC Features.................................................................................561
29.1 Configuring Call Preemption for SBC Emergency Calls ......................................561
29.2 Emergency Call Routing using LDAP to Obtain ELIN..........................................562
29.3 Enabling Interworking of SIP and SIP-I Endpoints...............................................563
29.4 WebRTC ..............................................................................................................566
29.4.1 SIP over WebSocket..............................................................................................568
29.4.2 Configuring WebRTC.............................................................................................570
29.5 Handling Registered AORs with Same Contact URIs..........................................573
29.6 Configuring Dual Registration..............................................................................573

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29.7 Call Forking..........................................................................................................577
29.7.1 Initiating SIP Call Forking ......................................................................................577
29.7.2 Configuring SIP Forking Initiated by SIP Proxy.....................................................577
29.7.3 Configuring Call Forking-based IP-to-IP Routing Rules........................................578
29.8 Call Survivability...................................................................................................578
29.8.1 Enabling Auto-Provisioning of Subscriber-Specific Information of BroadWorks
Server for Survivability........................................................................................................579
29.8.2 Configuring BroadSoft's Shared Phone Line Call Appearance for Survivability ...580
29.8.3 Configuring Call Survivability for Call Centers.......................................................581
29.8.4 Enabling Survivability Display on Aastra IP Phones .............................................583
29.9 Alternative Routing on Detection of Failed SIP Response...................................585
29.10VoIPerfect ............................................................................................................586
Cloud Resilience Package....................................................................................589
30 CRP Overview..................................................................................................591
31 CRP Configuration..........................................................................................593
31.1 Enabling the CRP Application..............................................................................593
31.2 Configuring Call Survivability Mode .....................................................................594
31.3 Pre-Configured IP Groups....................................................................................595
31.4 Pre-Configured IP-to-IP Routing Rules................................................................596
31.4.1 Normal Mode.........................................................................................................596
31.4.2 Emergency Mode...................................................................................................597
31.4.3 Auto Answer to Registrations................................................................................597
31.5 Configuring PSTN Fallback..................................................................................598
High-Availability System.......................................................................................599
32 HA Overview....................................................................................................601
32.1 Connectivity and Synchronization between Devices............................................601
32.2 Device Switchover upon Failure...........................................................................602
32.3 Viewing HA Status on Monitor Web Page............................................................603
33 HA Configuration.............................................................................................605
33.1 Initial HA Configuration ........................................................................................605
33.1.1 Network Topology Types and Rx/Tx Ethernet Port Group Settings......................605
33.1.2 Configuring the HA Devices ..................................................................................607
33.1.2.1 Step 1: Configure the First Device........................................................ 607
33.1.2.2 Step 2: Configure the Second Device................................................... 609
33.1.2.3 Step 3: Initialize HA on the Devices...................................................... 610
33.2 Configuration while HA is Operational .................................................................610
33.3 Configuring Firewall Allowed Rules......................................................................612
33.4 Monitoring IP Entity and HA Switchover upon Ping Failure.................................613
34 HA Maintenance ..............................................................................................615
34.1 Maintenance of Redundant Device......................................................................615
34.2 Replacing a Failed Device ...................................................................................615
34.3 Initiating an HA Switchover..................................................................................615

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34.4 Resetting the Redundant Unit..............................................................................616
34.5 Software Upgrade................................................................................................616
34.6 Disconnecting and Reconnecting HA...................................................................616
Maintenance...........................................................................................................619
35 Basic Maintenance..........................................................................................621
35.1 Resetting the Device............................................................................................621
35.2 Remotely Resetting Device using SIP NOTIFY...................................................622
35.3 Locking and Unlocking the Device.......................................................................622
35.4 Saving Configuration............................................................................................624
36 Channel Maintenance .....................................................................................625
36.1 Disconnecting Active Calls...................................................................................625
37 Auxiliary Files..................................................................................................627
37.1 Loading Auxiliary Files.........................................................................................627
37.1.1 Loading Auxiliary Files through Web Interface......................................................627
37.1.2 Loading Auxiliary Files through CLI.......................................................................628
37.2 Deleting Auxiliary Files.........................................................................................629
37.3 Call Progress Tones File......................................................................................629
37.4 Prerecorded Tones File........................................................................................632
37.5 Dial Plan File........................................................................................................633
37.5.1 Creating a Dial Plan File........................................................................................633
37.5.2 Obtaining IP Destination from Dial Plan File .........................................................634
37.5.3 Viewing Information of Installed Dial Plan File......................................................634
37.6 User Information File............................................................................................635
37.6.1 Enabling the User Info Table.................................................................................635
37.6.2 User Information File for SBC User Database.......................................................635
37.6.2.1 Configuring SBC User Info Table through Web Interface..................... 636
37.6.2.2 Configuring SBC User Info Table through CLI...................................... 637
37.6.2.3 Configuring SBC User Info Table in Loadable Text File....................... 638
37.6.3 Viewing the Installed User Info File Name.............................................................639
37.7 AMD Sensitivity File.............................................................................................639
38 License Key .....................................................................................................641
38.1 Viewing the License Key......................................................................................641
38.2 Installing a New License Key...............................................................................642
38.2.1 Installing License Key through Web Interface.......................................................642
38.2.1.1 Installing a License Key String.............................................................. 643
38.2.1.2 Installing a License Key File.................................................................. 644
38.2.2 Installing License Key through CLI........................................................................648
38.2.3 Verifying Installed License Key..............................................................................648
38.3 Upgrading SBC Capacity Licenses by License Pool Manager Server.................649
38.4 Backing up the License Key.................................................................................651
38.5 Viewing the Device's Product Key .......................................................................652
39 Software Upgrade Wizard...............................................................................653
40 Configuration File............................................................................................659
40.1 Saving Configuration to a File..............................................................................659

Version 7.2 13 Mediant 4000 SBC
User's Manual Contents
40.2 Loading a Configuration File................................................................................659
41 Automatic Provisioning..................................................................................661
41.1 Automatic Configuration Methods........................................................................661
41.1.1 DHCP-based Provisioning.....................................................................................661
41.1.1.1 Provisioning the Device using DHCP Option 160................................. 662
41.1.2 HTTP-based Provisioning......................................................................................663
41.1.3 FTP-based Provisioning ........................................................................................664
41.1.4 Provisioning using AudioCodes OVOC.................................................................664
41.2 HTTP/S-Based Provisioning using the Automatic Update Feature......................664
41.2.1 Files Provisioned by Automatic Update.................................................................665
41.2.2 File Location for Automatic Update .......................................................................666
41.2.3 MAC Address Placeholder in Configuration File Name.........................................666
41.2.4 File Template for Automatic Provisioning..............................................................667
41.2.5 Triggers for Automatic Update...............................................................................668
41.2.6 Access Authentication with HTTP Server..............................................................669
41.2.7 Querying Provisioning Server for Updated Files...................................................670
41.2.8 File Download Sequence.......................................................................................672
41.2.9 Cyclic Redundancy Check on Downloaded Configuration Files...........................673
41.2.10Automatic Update Configuration Examples...........................................................674
41.2.10.1Automatic Update for Single Device ..................................................... 674
41.2.10.2Automatic Update from Remote Servers .............................................. 675
41.2.10.3Automatic Update for Mass Deployment............................................... 676
42 SBC Configuration Wizard .............................................................................679
42.1 Starting the SBC Configuration Wizard................................................................680
42.2 General Setup Page.............................................................................................681
42.3 System Page........................................................................................................683
42.4 Interfaces Page....................................................................................................684
42.5 IP-PBX Page........................................................................................................685
42.6 SIP Trunk Page....................................................................................................687
42.7 Number Manipulation Page..................................................................................689
42.8 Remote Users Page.............................................................................................690
42.9 Summary Page ....................................................................................................691
42.10Congratulations Page...........................................................................................692
43 Restoring Factory Defaults ............................................................................693
43.1 Restoring Factory Defaults through CLI...............................................................693
43.2 Restoring Factory Defaults through Web Interface..............................................694
43.3 Restoring Defaults through ini File.......................................................................694
Status, Performance Monitoring and Reporting.................................................695
44 System Status .................................................................................................697
44.1 Viewing Device Information..................................................................................697
44.2 Viewing Device Status on Monitor Page..............................................................699
45 Reporting DSP Utilization through SNMP MIB..............................................703
46 Viewing Carrier-Grade Alarms .......................................................................705
46.1 Viewing Active Alarms..........................................................................................705

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Mediant 4000 SBC
46.2 Viewing History Alarms........................................................................................706
47 Viewing Management User Activity Logs .....................................................709
48 Viewing Performance Monitoring ..................................................................711
48.1 Viewing Call Success and Failure Ratio ..............................................................711
48.2 Viewing Average Call Duration ............................................................................713
48.3 Configuring Performance Profiles........................................................................714
49 Viewing VoIP Status........................................................................................719
49.1 Viewing SBC Registered Users ...........................................................................719
49.2 Viewing Proxy Set Status.....................................................................................720
49.3 Viewing Registration Status.................................................................................722
49.4 Viewing Test Call CDRs.......................................................................................722
49.5 Viewing SBC CDR History...................................................................................723
50 Viewing Network Status..................................................................................725
50.1 Viewing Active IP Interfaces.................................................................................725
50.2 Viewing Ethernet Device Status...........................................................................725
50.3 Viewing Ethernet Port Information .......................................................................725
50.4 Viewing Static Routes Status...............................................................................726
51 Viewing Hardware Status ...............................................................................727
51.1 Viewing Hardware Components Status ...............................................................727
52 Reporting Information to External Party .......................................................729
52.1 Configuring RTCP XR..........................................................................................729
52.2 Generating Call Detail Records............................................................................733
52.2.1 CDR Field Description...........................................................................................734
52.2.1.1 CDR Fields for SBC Signaling .............................................................. 734
52.2.1.2 CDR Fields for SBC Media ................................................................... 739
52.2.1.3 CDR Fields for SBC Local Storage....................................................... 741
52.2.2 Customizing CDRs for SBC Calls..........................................................................743
52.2.3 Configuring CDR Reporting...................................................................................746
52.2.4 Storing CDRs on the Device..................................................................................747
52.3 Configuring RADIUS Accounting .........................................................................750
Diagnostics............................................................................................................757
53 Syslog and Debug Recording ........................................................................759
53.1 Configuring Log Filter Rules.................................................................................759
53.1.1 Filtering IP Network Traces ...................................................................................763
53.2 Configuring Syslog...............................................................................................764
53.2.1 Syslog Message Format........................................................................................764
53.2.1.1 Event Representation in Syslog Messages .......................................... 766
53.2.1.2 Identifying AudioCodes Syslog Messages using Facility Levels .......... 768
53.2.1.3 Syslog Fields for Answering Machine Detection (AMD)....................... 768
53.2.1.4 SNMP Alarms in Syslog Messages....................................................... 769
53.2.2 Enabling Syslog.....................................................................................................769
53.2.3 Configuring the Syslog Server Address.................................................................770
53.2.4 Configuring Syslog Debug Level...........................................................................770
53.2.5 Configuring Reporting of Management User Activities..........................................771

Version 7.2 15 Mediant 4000 SBC
User's Manual Contents
53.2.6 Viewing Syslog Messages.....................................................................................772
53.3 Configuring Debug Recording..............................................................................773
53.3.1 Configuring the Debug Recording Server Address...............................................774
53.3.2 Collecting Debug Recording Messages ................................................................774
53.3.3 Debug Capturing on Physical VoIP Interfaces......................................................775
54 Enabling SIP Call Flow Diagrams in OVOC...................................................777
55 Debugging Web Services ...............................................................................779
56 Creating Core Dump and Debug Files upon Device Crash .........................781
57 Testing SIP Signaling Calls............................................................................783
57.1 Configuring Test Call Endpoints...........................................................................783
57.2 Starting and Stopping Test Calls..........................................................................787
57.3 Viewing Test Call Status......................................................................................788
57.4 Viewing Test Call Statistics..................................................................................788
57.5 Configuring DTMF Tones for Test Calls...............................................................790
57.6 Configuring Basic Test Calls................................................................................790
57.7 Test Call Configuration Examples........................................................................791
58 Pinging a Remote Host or IP Address...........................................................795
Appendix................................................................................................................797
59 Dialing Plan Notation for Routing and Manipulation....................................799
60 Configuration Parameters Reference............................................................803
60.1 Management Parameters.....................................................................................803
60.1.1 General Parameters ..............................................................................................803
60.1.2 Web Parameters....................................................................................................804
60.1.3 Telnet Parameters.................................................................................................809
60.1.4 ini File Parameters.................................................................................................810
60.1.5 SNMP Parameters.................................................................................................810
60.1.6 Serial Parameters..................................................................................................814
60.1.7 Auxiliary and Configuration File Name Parameters ..............................................815
60.1.8 Automatic Update Parameters ..............................................................................816
60.2 Networking Parameters........................................................................................820
60.2.1 Ethernet Parameters..............................................................................................820
60.2.2 Multiple VoIP Network Interfaces and VLAN Parameters.....................................821
60.2.3 Routing Parameters...............................................................................................821
60.2.4 Quality of Service Parameters...............................................................................822
60.2.5 NAT Parameters....................................................................................................823
60.2.6 DNS Parameters....................................................................................................824
60.2.7 DHCP Parameters.................................................................................................825
60.2.8 NTP and Daylight Saving Time Parameters..........................................................827
60.3 Debugging and Diagnostics Parameters..............................................................829
60.3.1 General Parameters ..............................................................................................829
60.3.2 SIP Test Call Parameters......................................................................................829
60.3.3 Syslog, CDR and Debug Parameters....................................................................830
60.3.4 Resource Allocation Indication Parameters...........................................................836
60.4 HA Parameters.....................................................................................................836
60.5 Security Parameters.............................................................................................838

User's Manual 16 Document #: LTRT-40203
Mediant 4000 SBC
60.5.1 General Security Parameters................................................................................838
60.5.2 HTTPS Parameters ...............................................................................................840
60.5.3 SRTP Parameters..................................................................................................841
60.5.4 TLS Parameters.....................................................................................................843
60.5.5 SSH Parameters....................................................................................................845
60.5.6 IDS Parameters.....................................................................................................846
60.5.7 OCSP Parameters.................................................................................................847
60.6 Quality of Experience Parameters .......................................................................848
60.7 Control Network Parameters................................................................................850
60.7.1 IP Group, Proxy, Registration and Authentication Parameters.............................850
60.7.2 Network Application Parameters...........................................................................859
60.8 General SIP Parameters......................................................................................861
60.9 Coders and Profile Parameters............................................................................878
60.10Channel Parameters............................................................................................879
60.10.1Voice Parameters..................................................................................................880
60.10.2Coder Parameters .................................................................................................882
60.10.3DTMF Parameters.................................................................................................883
60.10.4RTP, RTCP and T.38 Parameters.........................................................................884
60.11SBC Parameters..................................................................................................888
60.11.1Supplementary Services........................................................................................907
60.12IP Media Parameters ...........................................................................................908
60.13Services ...............................................................................................................911
60.13.1SIP-based Media Recording Parameters..............................................................911
60.13.2RADIUS and LDAP Parameters............................................................................912
60.13.2.1General Parameters.............................................................................. 912
60.13.2.2RADIUS Parameters............................................................................. 913
60.13.2.3LDAP Parameters ................................................................................. 915
60.13.3Least Cost Routing Parameters ............................................................................918
60.13.4Call Setup Rules Parameters................................................................................919
60.13.5HTTP-based Services............................................................................................919
60.13.6HTTP Proxy Parameters........................................................................................920
61 Channel Capacity............................................................................................923
61.1 Mediant 4000 SBC...............................................................................................924
61.2 Mediant 4000B SBC.............................................................................................925
62 Technical Specifications ................................................................................927

Version 7.2 17 Mediant 4000 SBC
User's Manual Notices
Notice
Information contained in this document is believed to be accurate and reliable at the time of
printing. However, due to ongoing product improvements and revisions, AudioCodes cannot
guarantee accuracy of printed material after the Date Published nor can it accept responsibility
for errors or omissions. Before consulting this document, check the corresponding Release
Notes regarding feature preconditions and/or specific support in this release. In cases where
there are discrepancies between this document and the Release Notes, the information in the
Release Notes supersedes that in this document. Updates to this document and other
documents as well as software files can be downloaded by registered customers at
http://www.audiocodes.com/downloads.
This document is subject to change without notice.
Date Published: November-14-2017
WEEE EU Directive
Pursuant to the WEEE EU Directive, electronic and electrical waste must not be disposed
of with unsorted waste. Please contact your local recycling authority for disposal of this
product.
Customer Support
Customer technical support and services are provided by AudioCodes or by an authorized
AudioCodes Service Partner. For more information on how to buy technical support for
AudioCodes products and for contact information, please visit our Web site at
www.audiocodes.com/support.
Abbreviations and Terminology
Each abbreviation, unless widely used, is spelled out in full when first used.
Related Documentation
Manual Name
SIP Release Notes
Mediant 4000 E-SBC Hardware Installation Manual
Complementary Guides
CLI Reference Guide
SNMP User's Guide
SBC Design Guide
Recommended Security Guidelines Configuration Note
SIP Message Manipulations Quick Reference Guide

User's Manual 18 Document #: LTRT-40203
Mediant 4000 SBC
Manual Name
Utility Guides
INI Viewer & Editor Utility User's Guide
AcBootP Utility User's Guide
CLI Wizard User's Guide
Notes and Warnings
Note: The device is an indoor unit and therefore, must be installed only INDOORS. In
addition, Ethernet port interface cabling must be routed only indoors and must not exit
the building.
Note: The scope of this document does not fully cover security aspects for deploying
the device in your environment. Security measures should be done in accordance
with your organization’s security policies. For basic security guidelines, refer to
AudioCodes Recommended Security Guidelines document.
Note: Throughout this manual, unless otherwise specified, the term device refers to
your AudioCodes product.
Note: Before configuring the device, ensure that it is installed correctly as instructed
in the Hardware Installation Manual.
Note:
•This device includes software developed by the OpenSSL Project for use in the
OpenSSL Toolkit (http://www.openssl.org/).
•This device includes cryptographic software written by Eric Young
([e-mail]).
Note: Some of the features listed in this document are available only if the relevant
License Key has been purchased from AudioCodes and installed on the device. For a
list of License Keys that can be purchased, please consult your AudioCodes sales
representative.

Version 7.2 19 Mediant 4000 SBC
User's Manual Notices
Note: OPEN SOURCE SOFTWARE. Portions of the software may be open source
software and may be governed by and distributed under open source licenses, such
as the terms of the GNU General Public License (GPL), the terms of the Lesser
General Public Li
cense (LGPL), BSD and LDAP, which terms are located at:
http://www.audiocodes.com/support and all are incorporated herein by reference. If
any open source software is provided in object code, and its accompanying license
requires that it be provided in source code as well, Buyer may receive such source
code by contacting AudioCodes, by following the instructions available on
AudioCodes website.
Document Revision Record
LTRT Description
41727 Initial document release for Version 7.2.
41729 Updated patch version 7.20A.001.
Updated sections: Computer Requirements (supported browsers); CLI-Based
Management (permitted user levels); Configuring TLS Certificate Contexts (TLS
versions); Configuring Physical Ethernet Ports (show command); Configuring
Underlying Ethernet Devices (max. VLANs); SIP Signaling Messages (procedure);
First Incoming Packet Mechanism (NAT by Signaling); Robust Receipt of Media
Streams by Media Latching (procedure); Configuring Firewall Settings (note);
Configuring General Security Settings (Web path); Viewing IDS Alarms (show
command); Viewing and Deleting DHCP Clients (show command); Configuring the
Device's LDAP Cache; Centralized Third-Party Routing Server (SIP messages and
credentials for authentication); Configuring Call Setup Rules (dial plan queries);
Call Setup Rule Examples; Registration Refreshes; Using Dial Plan Tags for IP-to-
IP Routing (example); Enabling Interworking of SIP and SIP-I Endpoints (SPIROU
and SIP header X-AC-Action); Configuring WebRTC (Web path); Configuring
BroadSoft's Shared Phone Line Call Appearance for Survivability (example);
Automatic Provisioning (CLI Script file); Configuring RTCP XR (IP Group); Enabling
Same Call Session ID over Multiple Devices (removed); Configuring Test Call
Endpoints (typo); CLI (illustration); Accessing the Web Interface (note).
New sections: VoIPerfect; Using Dial Plan Tags for Call Setup Rules; Using Dial
Plan Tags for Message Manipulation.
New parameters: WebLoginBlockAutoComplete; EnforcePasswordComplexity;
IPGroup_SBCKeepOriginalCallID; IPGroup_SBCDialPlanName;
IPGroup_CallSetupRulesSetId; CallSetupRules_QueryType;
CallSetupRules_QueryTarget; IpProfile_SBCVoiceQualityEnhancement;
IpProfile_SBCMaxOpusBW; IpProfile_SBCISUPVariant; AUPDCliScriptURL;
PublicationIPGroupID.
Updated parameters: Web password (EnforcePasswordComplexity);
TLSContexts_TLSVersion; InterfaceTable_InterfaceName;
CallSetupRules_AttributesToQuery (Web name and description);
IPProfile_SBCRTCPFeedback (values); IpProfile_MediaIPVersionPreference;
ConditionTable_Name (max. chars); Test_Call_RouteBy (default); NATMode
(values); SendAcSessionIDHeader (removed); QOEPort (removed);
MaxGeneratedRegistersRate; CLIPrivPass; GeneratedRegistersInterval;
RTPOnlyMode (removed); SBCUserRegistrationGraceTime;
SBCKeepOriginalCallId.
41731 Updated sections: Changing Index Position of Table Rows; Searching for
Configuration Parameters; Configuring TLS Certificate Contexts (IPSec removed);
Enabling the HTTP Proxy Application (license); Direct Media; Configuring SBC IP-

User's Manual 20 Document #: LTRT-40203
Mediant 4000 SBC
LTRT Description
to-IP Routing (IP Group load balancing); MAC Address Placeholder in
Configuration File Name; VoIPerfect; Technical Specifications (AMR-WB removed).
New sections: Configuring IP Group Sets.
Updated parameters: SIPInterface_SBCDirectMedia;
IPProfile_SBCDirectMediaTag; IpProfile_DisconnectOnBrokenConnection;
IP2IPRouting_DestType; IPOutboundManipulation_PrivacyRestrictionMode;
BrokenConnectionEventTimeout.
New parameters: IP2IPRouting_IPGroupSetName; EnableNonCallCdr; PGroupSet;
IPGroupSetMember; NoRTPDetectionTimeout; DisconnectOnBrokenConnection;
BrokenConnectionEventTimeout.
41733 Patch version 7.20A.100.
Updated sections: CLI (telnet removed); Areas of the GUI (SBC Wizard); Assigning
Rows from Other Tables (search, add new, and view); Invalid Value Indications;
Creating a Login Welcome Message; Configuring Management User Accounts
(CLI); Enabling SSH with RSA Public Key for CLI (public key); Configuring TLS
Certificate Contexts (DTLS); Assigning CSR-based Certificates to TLS Contexts;
Generating Private Keys for TLS Contexts; Configuring Underlying Ethernet
Devices (max.); Configuring IP Network Interfaces (max.); Configuring Media
Realms (max.); SRTP using DTLS Protocol; Building and Viewing your Network
Topology; SIP-based Media Recording (multiple SRSs); Enabling SIP-based Media
Recording; Configuring SIP Recording Rules; Configuring Proxy Sets (keep-alive);
WebRTC (RFCs); Configuring WebRTC; VoIPerfect; Pre-Configured IP Groups;
Normal Mode (CRP); Emergency Mode (CRP); Auto Answer to Registrations
(CRP); Network Topology Types and Rx/Tx Ethernet Port Group Settings; License
Key; Viewing the License Key; Obtaining License Key for Feature Upgrade
(removed); Installing the a New License Key; Installing License Key through Web
Interface; Upgrading SBC Capacity Licenses by License Pool Manager Server;
Viewing Device Information; Viewing Call Routing Status (removed); Configuring
RTCP XR (IP Group); Configuring RADIUS Accounting (typo for Accounting-
Request); Automatic Provisioning (Startup CLI Script File).
New sections: Customizing the Web Interface; Replacing the Corporate Logo;
Replacing the Corporate Logo with an Image; Replacing the Corporate Logo with
Text; Customizing the Product Name; Customizing the Favicon; SRTP using DTLS
Protocol; SBC Wizard; Viewing the Device's Product Key; Saving Configuration to a
File; Loading a Configuration File; Viewing Proxy Set Status.
Updated parameters: TLSContexts_ServerCipherString;
TLSContexts_ClientCipherString; NATTranslation_SourceStartPort;
NATTranslation_SourceEndPort; NATTranslation_TargetStartPort;
NATTranslation_TargetEndPort; SNMPSysOid; SNMPTrapEnterpriseOid;
EnableCoreDump (typo); HTTPSCipherString (removed); SSHAdminKey;
SessionExpiresDisconnectTime; BrokenConnectionEventTimeout;
RADIUSRetransmission (default); RadiusTO (default);
SIPRecRouting_RecordedIPGroupName; SIPRecRouting_SRSIPGroupName.
New parameters: WebUsers_SSHPublicKey; TLSContexts_DTLSVersion;
TLSContexts_DHKeySize; SIPRecRouting_SRSRedundantIPGroupName;
ProxySet_SuccessDetectionRetries; ProxySet_SuccessDetectionInterval;
ProxySet_FailureDetectionRetransmissions; ProxySet_MinActiveServersLB;
WebUsers; WebFaviconFileUrl; AUPDStartupScriptURL.
41736 Updated sections: Configuring VoIP LAN Interface for OAMP (CLI); Configuring
Management User Accounts (typo); Enabling SNMP; Configuring IP Network
Interfaces; SIP-based Media Recording (multiple SRS); Configuring LDAP Servers
(max. and cache); Configuring Call Setup Rules; Configuring SBC IP-to-IP Routing
(note); Configuring SIP Response Codes for Alternative Routing Reasons; SBC
Wizard (screens); Auxiliary Files (SBC Wizard); Viewing IP Connectivity (typo);