AudioCodes Mediant 2000 User manual

Mediant™ 2000
VoIP Media Gateway
SIP Protocol
User's Manual
Version 6.4
November 2011
Document # LTRT-68814

Version 6.4 3 November 2011
SIP User's Manual Contents
Table of Contents
1Overview ............................................................................................................15
1.1 SIP Overview .........................................................................................................16
Part I: Getting Started..............................................................................................17
2Assigning the VoIP LAN IP Address................................................................19
2.1 Using CLI ...............................................................................................................19
2.2 Using the Web Interface.........................................................................................20
2.3 Using BootP/TFTP Server......................................................................................21
Part II: Management Tools......................................................................................23
3Web-Based Management..................................................................................25
3.1 Getting Acquainted with the Web Interface............................................................25
3.1.1 Computer Requirements..........................................................................................25
3.1.2 Accessing the Web Interface...................................................................................26
3.1.3 Areas of the GUI......................................................................................................27
3.1.4 Toolbar Description..................................................................................................28
3.1.5 Navigation Tree .......................................................................................................29
3.1.5.1 Displaying Navigation Tree in Basic and Full View..................................30
3.1.5.2 Showing / Hiding the Navigation Pane.....................................................30
3.1.6 Working with Configuration Pages ..........................................................................32
3.1.6.1 Accessing Pages......................................................................................32
3.1.6.2 Viewing Parameters.................................................................................32
3.1.6.3 Modifying and Saving Parameters...........................................................34
3.1.6.4 Entering Phone Numbers.........................................................................35
3.1.6.5 Working with Tables.................................................................................36
3.1.7 Searching for Configuration Parameters.................................................................40
3.1.8 Working with Scenarios...........................................................................................41
3.1.8.1 Creating a Scenario..................................................................................41
3.1.8.2 Accessing a Scenario...............................................................................43
3.1.8.3 Editing a Scenario....................................................................................44
3.1.8.4 Saving a Scenario to a PC.......................................................................45
3.1.8.5 Loading a Scenario to the Device............................................................46
3.1.8.6 Deleting a Scenario..................................................................................46
3.1.8.7 Quitting Scenario Mode............................................................................47
3.1.9 Creating a Login Welcome Message.......................................................................48
3.1.10 Getting Help.............................................................................................................49
3.1.11 Logging Off the Web Interface.................................................................................50
3.2 Using the Home Page............................................................................................51
3.2.1 Assigning a Port Name............................................................................................53
3.2.2 Viewing Trunk Channels..........................................................................................53
3.2.3 Switching Between Modules....................................................................................54
3.3 Configuring Web User Accounts............................................................................55
3.4 Configuring Web Security Settings ........................................................................58
3.5 Web Login Authentication using Smart Cards .......................................................59
3.6 Configuring Web and Telnet Access List...............................................................60
3.7 Configuring RADIUS Settings................................................................................62

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4CLI-Based Management....................................................................................63
4.1 Configuring Telnet and SSH Settings ....................................................................64
5SNMP-Based Management...............................................................................65
5.1 Configuring SNMP Community Strings..................................................................65
5.2 Configuring SNMP Trap Destinations....................................................................66
5.3 Configuring SNMP Trusted Managers...................................................................68
5.4 Configuring SNMP V3 Users..................................................................................69
6EMS-Based Management..................................................................................71
7INI File-Based Management..............................................................................73
7.1 INI File Format .......................................................................................................73
7.1.1 Configuring Individual ini File Parameters...............................................................73
7.1.2Configuring ini File Table Parameters.....................................................................74
7.1.3 General ini File Formatting Rules............................................................................75
7.2 Modifying an ini File ...............................................................................................76
7.3 Secured Encoded ini File.......................................................................................76
Part III: General System Settings ...........................................................................77
8Configuring Certificates ...................................................................................79
8.1 Replacing Device Certificate..................................................................................79
8.2 Loading a Private Key............................................................................................82
8.3 Mutual TLS Authentication.....................................................................................83
8.4 Self-Signed Certificates..........................................................................................84
9Date and Time....................................................................................................85
9.1 Configuring Manual Date and Time .......................................................................85
9.2 Configuring Automatic Date and Time through SNTP Server................................86
Part IV: VoIP Settings..............................................................................................89
10 Network..............................................................................................................91
10.1 Ethernet Interface Configuration............................................................................91
10.2 Ethernet Interface Redundancy .............................................................................92
10.3 Configuring IP Interface Settings ...........................................................................92
10.3.1 Network Configuration.............................................................................................97
10.3.1.1 Multiple Network Interfaces and VLANs...................................................97
10.3.1.2 Setting Up VoIP Networking.................................................................. 104
10.4 Configuring the IP Routing Table.........................................................................108
10.4.1 Routing Table Columns.........................................................................................110
10.4.1.1 Destination Column............................................................................... 110
10.4.1.2 Prefix Length Column............................................................................ 110
10.4.1.3 Gateway Column................................................................................... 111
10.4.1.4 Interface Column................................................................................... 111
10.4.1.5 Metric Column....................................................................................... 111
10.4.1.6 State Column......................................................................................... 111
10.4.2 Routing Table Configuration Summary and Guidelines........................................112
10.4.3 Troubleshooting the Routing Table .......................................................................112
10.5 Configuring QoS Settings.....................................................................................112

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10.6 DNS......................................................................................................................113
10.6.1 Configuring the Internal DNS Table.......................................................................113
10.6.2 Configuring the Internal SRV Table.......................................................................115
10.7 NAT (Network Address Translation) Support.......................................................116
10.7.1 STUN.....................................................................................................................116
10.7.2 First Incoming Packet Mechanism.........................................................................117
10.7.3 No-Op Packets ......................................................................................................117
10.8 Configuring NFS Settings.....................................................................................118
10.9 Robust Receipt of Media Streams .......................................................................120
10.10Multiple Routers Support......................................................................................120
10.11IP Multicasting......................................................................................................120
11 Security............................................................................................................121
11.1 Configuring Firewall Settings ...............................................................................121
11.2 Configuring General Security Settings.................................................................125
11.3 Configuring IP Security Proposal Table...............................................................126
11.4 Configuring IP Security Associations Table.........................................................127
12 Media................................................................................................................131
12.1 Configuring Voice Settings...................................................................................131
12.1.1 Voice Gain (Volume) Control.................................................................................132
12.1.2 Silence Suppression (Compression).....................................................................132
12.1.3 Echo Cancellation..................................................................................................133
12.2 Fax and Modem Capabilities................................................................................134
12.2.1 Fax/Modem Operating Modes...............................................................................135
12.2.2 Fax/Modem Transport Modes ...............................................................................135
12.2.2.1 T.38 Fax Relay Mode............................................................................ 135
12.2.2.2 G.711 Fax / Modem Transport Mode.................................................... 136
12.2.2.3 Fax Fallback.......................................................................................... 137
12.2.2.4 Fax/Modem Bypass Mode .................................................................... 137
12.2.2.5 Fax / Modem NSE Mode....................................................................... 138
12.2.2.6 Fax / Modem Transparent with Events Mode....................................... 139
12.2.2.7 Fax / Modem Transparent Mode........................................................... 139
12.2.2.8 RFC 2833 ANS Report upon Fax/Modem Detection............................ 140
12.2.3 V.34 Fax Support...................................................................................................140
12.2.3.1 Bypass Mechanism for V.34 Fax Transmission.................................... 140
12.2.3.2 Relay Mode for T.30 and V.34 Faxes ................................................... 141
12.2.4 V.152 Support........................................................................................................141
12.2.5 Fax Transmission behind NAT..............................................................................142
12.3 Configuring RTP/RTCP Settings..........................................................................143
12.3.1 Dynamic Jitter Buffer Operation ............................................................................144
12.3.2 Comfort Noise Generation.....................................................................................145
12.3.3 Dual-Tone Multi-Frequency Signaling...................................................................145
12.3.3.1 Configuring DTMF Transport Types...................................................... 145
12.3.3.2 Configuring RFC 2833 Payload ............................................................ 146
12.3.4 RTP Multiplexing (ThroughPacket)........................................................................148
12.3.5 Configuring RTP Base UDP Port...........................................................................150
12.3.6 Configuring RTP Control Protocol Extended Reports (RTCP XR)........................150
12.4 Configuring IP Media Settings..............................................................................152
12.4.1 Answer Machine Detector (AMD)..........................................................................153
12.4.2 Configuring Automatic Gain Control (AGC)...........................................................157
12.5 Configuring General Media Settings....................................................................157
12.6 Configuring DSP Templates.................................................................................158

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12.7 Configuring Media Realms...................................................................................159
12.8 Configuring Media Security..................................................................................161
13 Services ...........................................................................................................163
13.1 Routing Based on LDAP Active Directory Queries ..............................................163
13.1.1 LDAP Overview .....................................................................................................163
13.1.2 Configuring LDAP Settings....................................................................................164
13.1.3 AD-Based Tel-to-IP Routing in Microsoft OCS 2007 Environment.......................164
13.2 Least Cost Routing...............................................................................................167
13.2.1 Overview................................................................................................................167
13.2.2 Configuring LCR....................................................................................................170
13.2.2.1 Enabling the LCR Feature..................................................................... 170
13.2.2.2 Configuring Cost Groups....................................................................... 172
13.2.2.3 Configuring Time Bands for Cost Groups............................................. 173
13.2.2.4 Assigning Cost Groups to Routing Rules.............................................. 174
14 Control Network ..............................................................................................175
14.1 Configuring SRD Table........................................................................................175
14.2 Configuring SIP Interface Table...........................................................................177
14.3 Configuring IP Groups..........................................................................................179
14.4 Configuring Proxy Sets Table ..............................................................................184
14.5 Configuring NAT Translation per IP Interface......................................................188
14.6 Multiple SIP Signaling and Media Interfaces using SRDs....................................190
15 Enabling Applications.....................................................................................197
16 Coders and Profiles ........................................................................................199
16.1 Configuring Coders..............................................................................................199
16.2 Configuring Coder Groups...................................................................................200
16.3 Configuring Tel Profile..........................................................................................202
16.4 Configuring IP Profiles .........................................................................................204
17 SIP Definitions.................................................................................................207
17.1 Configuring SIP General Parameters...................................................................207
17.2 Configuring Advanced Parameters......................................................................208
17.3 Configuring Account Table...................................................................................209
17.4 Configuring Proxy and Registration Parameters..................................................212
18 GW and IP to IP ...............................................................................................215
18.1 Digital PSTN.........................................................................................................215
18.1.1 Configuring TDM Bus Settings..............................................................................215
18.1.2 Configuring CAS State Machines..........................................................................216
18.1.3 Configuring Trunk Settings....................................................................................218
18.1.4 Configuring Digital Gateway Parameters ..............................................................220
18.1.5 Tunneling Applications...........................................................................................222
18.1.5.1 TDM Tunneling...................................................................................... 222
18.1.5.2 QSIG Tunneling..................................................................................... 225
18.1.6 Advanced PSTN Configuration..............................................................................227
18.1.6.1 Release Reason Mapping..................................................................... 227
18.1.6.2 ISDN Overlap Dialing............................................................................ 231
18.1.6.3 ISDN Non-Facility Associated Signaling (NFAS).................................. 232
18.1.6.4 Redirect Number and Calling Name (Display)...................................... 235
18.2 Trunk Group.........................................................................................................236
18.2.1 Configuring Trunk Group Table.............................................................................236

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18.2.2 Configuring Trunk Group Settings.........................................................................238
18.3 Manipulation.........................................................................................................241
18.3.1 Configuring General Settings ................................................................................241
18.3.2 Configuring Number Manipulation Tables.............................................................241
18.3.3 Configuring Redirect Number IP to Tel..................................................................246
18.3.4 Configuring Redirect Number Tel to IP..................................................................248
18.3.5 Mapping NPI/TON to SIP Phone-Context .............................................................250
18.3.6 Numbering Plans and Type of Number.................................................................251
18.3.7 Configuring Release Cause Mapping....................................................................253
18.3.8 SIP Calling Name Manipulations...........................................................................254
18.3.9 SIP Message Manipulation....................................................................................254
18.3.10Manipulating Number Prefix ..................................................................................255
18.4 Routing.................................................................................................................256
18.4.1 Configuring General Routing Parameters .............................................................256
18.4.2 Configuring Outbound IP Routing Table................................................................256
18.4.3 Configuring Inbound IP Routing Table..................................................................264
18.4.4 Configuring Alternative Routing Reasons..............................................................267
18.4.5 Configuring Call Forward upon Busy Trunk...........................................................268
18.5 DTMF and Supplementary...................................................................................269
18.5.1 Configuring DTMF and Dialing..............................................................................269
18.5.2 Configuring Supplementary Services....................................................................269
18.5.2.1 Call Hold and Retrieve .......................................................................... 271
18.5.2.2 Call Transfer.......................................................................................... 271
18.5.2.3 Call Forward.......................................................................................... 272
18.5.2.4 Message Waiting Indication.................................................................. 273
18.5.2.5 Emergency E911 Phone Number Services........................................... 274
18.5.2.6 Multilevel Precedence and Preemption................................................. 274
18.5.3 Configuring Voice Mail Parameters.......................................................................276
18.5.4 Advice of Charge Services for Euro ISDN.............................................................277
18.6 Dialing Plan Features...........................................................................................278
18.6.1 Digit Mapping.........................................................................................................278
18.6.2 External Dial Plan File ...........................................................................................280
18.6.2.1 Modifying ISDN-to-IP Calling Party Number......................................... 281
18.6.3 Dial Plan Prefix Tags for IP-to-Tel Routing............................................................282
18.7 Configuring Alternative Routing (Based on Connectivity and QoS).....................284
18.7.1 Alternative Routing Mechanism.............................................................................284
18.7.2 Determining the Availability of Destination IP Addresses......................................284
18.7.3 PSTN Fallback.......................................................................................................285
18.8 SIP Call Routing Examples..................................................................................285
18.8.1 SIP Call Flow Example..........................................................................................285
18.8.2 SIP Message Authentication Example ..................................................................288
18.8.3 Trunk-to-Trunk Routing Example ..........................................................................290
18.8.4 SIP Trunking between Enterprise and ITSPs........................................................290
18.9 IP-to-IP Routing Application.................................................................................294
18.9.1 Theory of Operation...............................................................................................295
18.9.1.1 Proxy Sets............................................................................................. 296
18.9.1.2 IP Groups.............................................................................................. 296
18.9.1.3 Inbound and Outbound IP Routing Rules ............................................. 297
18.9.1.4 Accounts................................................................................................ 298
18.9.2 IP-to-IP Routing Configuration Example................................................................298
18.9.2.1 Step 1: Enable the IP-to-IP Capabilities................................................ 301
18.9.2.2 Step 2: Configure the Number of Media Channels............................... 301
18.9.2.3 Step 3: Define a Trunk Group for the Local PSTN................................ 302
18.9.2.4 Step 4: Configure the Proxy Sets.......................................................... 302
18.9.2.5 Step 5: Configure the IP Groups........................................................... 305

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18.9.2.6 Step 6: Configure the Account Table.................................................... 307
18.9.2.7 Step 7: Configure IP Profiles for Voice Coders..................................... 309
18.9.2.8 Step 8: Configure Inbound IP Routing .................................................. 310
18.9.2.9 Step 9: Configure Outbound IP Routing................................................ 312
18.9.2.10Step 10: Configure Destination Phone Number Manipulation.............. 314
19 Stand-Alone Survivability (SAS) Application................................................315
19.1 Overview..............................................................................................................315
19.1.1 SAS Operating Modes...........................................................................................315
19.1.1.1 SAS Outbound Mode ............................................................................ 316
19.1.1.2 SAS Redundant Mode........................................................................... 317
19.1.2 SAS Routing..........................................................................................................319
19.1.2.1 SAS Routing in Normal State................................................................ 319
19.1.2.2 SAS Routing in Emergency State......................................................... 321
19.2 SAS Configuration................................................................................................322
19.2.1 General SAS Configuration...................................................................................322
19.2.1.1 Enabling the SAS Application ............................................................... 322
19.2.1.2 Configuring Common SAS Parameters ................................................ 323
19.2.2 Configuring SAS Outbound Mode.........................................................................325
19.2.3 Configuring SAS Redundant Mode .......................................................................326
19.2.4 Configuring Gateway Application with SAS...........................................................326
19.2.4.1 Gateway with SAS Outbound Mode...................................................... 327
19.2.4.2 Gateway with SAS Redundant Mode.................................................... 328
19.2.5 Advanced SAS Configuration................................................................................330
19.2.5.1 Manipulating URI user part of Incoming REGISTER............................ 330
19.2.5.2 Manipulating Destination Number of Incoming INVITE......................... 331
19.2.5.3 SAS Routing Based on SAS Routing Table.......................................... 333
19.2.5.4 Blocking Calls from Unregistered SAS Users....................................... 336
19.2.5.5 Configuring SAS Emergency Calls ....................................................... 336
19.2.5.6 Adding SIP Record-Route Header to SIP INVITE ................................ 338
19.2.5.7 Replacing Contact Header for SIP Messages ...................................... 339
19.3 Viewing Registered SAS Users............................................................................340
19.4 SAS Cascading....................................................................................................340
20 Transcoding using Third-Party Call Control.................................................343
20.1 Using RFC 4117...................................................................................................343
Part V: Maintenance ..............................................................................................345
21 Basic Maintenance..........................................................................................347
21.1 Resetting the Device............................................................................................347
21.2 Locking and Unlocking the Device.......................................................................349
21.3 Saving Configuration............................................................................................350
22 Software Upgrade............................................................................................351
22.1 Loading Auxiliary Files.........................................................................................351
22.1.1 Call Progress Tones File .......................................................................................354
22.1.2 Prerecorded Tones File.........................................................................................356
22.1.3 CAS Files...............................................................................................................357
22.1.4 Dial Plan File..........................................................................................................357
22.1.5 User Information File .............................................................................................359
22.1.5.1 User Information File for PBX Extensions and "Global" Numbers........ 359
22.1.6 AMD Sensitivity File...............................................................................................360
22.2 Loading Software Upgrade Key...........................................................................362
22.2.1 Loading via BootP/TFTP........................................................................................365

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22.3 Software Upgrade Wizard....................................................................................366
22.4 Backing Up and Loading Configuration File.........................................................369
23 Restoring Factory Defaults ............................................................................371
23.1 Restoring Defaults using CLI ...............................................................................371
23.2 Restoring Defaults using an ini File......................................................................372
Part VI: Status, Performance Monitoring and Reporting....................................373
24 System Status .................................................................................................375
24.1 Viewing Device Information..................................................................................375
24.2 Viewing Ethernet Port Information .......................................................................376
25 Carrier-Grade Alarms......................................................................................377
25.1 Viewing Active Alarms..........................................................................................377
25.2 Viewing Alarm History..........................................................................................378
26 Performance Monitoring.................................................................................379
26.1 Viewing Trunk Utilization......................................................................................379
26.2 Viewing MOS per Media Realm...........................................................................381
27 VoIP Status ......................................................................................................383
27.1 Viewing Trunks & Channels Status......................................................................383
27.2 Viewing Active IP Interfaces.................................................................................385
27.3 Viewing Performance Statistics............................................................................385
27.4 Viewing Call Counters..........................................................................................386
27.5 Viewing SAS/SBC Registered Users...................................................................388
27.6 Viewing Call Routing Status.................................................................................389
27.7 Viewing IP Connectivity........................................................................................390
28 Reporting Information to External Party.......................................................393
28.1 Generating Call Detail Records............................................................................393
28.1.1 CDR Fields for Gateway Application.....................................................................393
28.1.2 Release Reasons in CDR......................................................................................395
28.1.3 Supported RADIUS Attributes...............................................................................397
28.2 Event Notification using X-Detect Header............................................................400
28.3 Querying Device Channel Resources using SIP OPTIONS ................................402
Part VII: Diagnostics and Troubleshooting.........................................................403
29 Configuring Syslog Settings..........................................................................405
30 Viewing Syslog Messages..............................................................................407
Part VIII: Appendices.............................................................................................409
AConfiguration Parameters Reference............................................................411
A.1 Networking Parameters........................................................................................411
A.1.1 Ethernet Parameters..............................................................................................411

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A.1.2 Multiple Network Interfaces and VLAN Parameters..............................................411
A.1.3 Static Routing Parameters.....................................................................................414
A.1.4 Quality of Service Parameters...............................................................................414
A.1.5 NAT and STUN Parameters..................................................................................416
A.1.6 NFS Parameters....................................................................................................418
A.1.7 DNS Parameters....................................................................................................419
A.1.8 DHCP Parameters.................................................................................................420
A.1.9 NTP and Daylight Saving Time Parameters..........................................................421
A.2 Management Parameters.....................................................................................422
A.2.1 General Parameters ..............................................................................................422
A.2.2 Web Parameters....................................................................................................423
A.2.3 Telnet Parameters.................................................................................................425
A.2.4 SNMP Parameters.................................................................................................425
A.2.5 Serial Parameters..................................................................................................428
A.3 Debugging and Diagnostics Parameters..............................................................429
A.3.1 General Parameters ..............................................................................................429
A.3.2 Syslog, CDR and Debug Parameters....................................................................430
A.3.3 Resource Allocation Indication Parameters...........................................................433
A.3.4 BootP Parameters .................................................................................................433
A.4 Security Parameters.............................................................................................435
A.4.1 General Parameters ..............................................................................................435
A.4.2 HTTPS Parameters ...............................................................................................436
A.4.3 SRTP Parameters..................................................................................................438
A.4.4 TLS Parameters.....................................................................................................440
A.4.5 SSH Parameters....................................................................................................441
A.4.6 IPSec Parameters..................................................................................................442
A.4.7 OCSP Parameters.................................................................................................444
A.5 RADIUS Parameters............................................................................................444
A.6 SIP Media Realm Parameters..............................................................................446
A.7 Control Network Parameters................................................................................447
A.7.1 IP Group, Proxy, Registration and Authentication Parameters.............................447
A.7.2 Network Application Parameters...........................................................................458
A.8 General SIP Parameters......................................................................................460
A.9 Coders and Profile Parameters............................................................................484
A.10 Channel Parameters............................................................................................493
A.10.1 Voice Parameters..................................................................................................493
A.10.2 Coder Parameters .................................................................................................495
A.10.3 DTMF Parameters.................................................................................................497
A.10.4 RTP, RTCP and T.38 Parameters.........................................................................498
A.11 Gateway and IP-to-IP Parameters.......................................................................503
A.11.1 Fax and Modem Parameters.................................................................................503
A.11.2 DTMF and Hook-Flash Parameters.......................................................................509
A.11.3 Digit Collection and Dial Plan Parameters.............................................................512
A.11.4 Voice Mail Parameters...........................................................................................514
A.11.5 Supplementary Services Parameters....................................................................519
A.11.5.1 Caller ID Parameters............................................................................. 519
A.11.5.2 Call Waiting Parameters........................................................................ 520
A.11.5.3 Call Forwarding Parameters ................................................................. 520
A.11.5.4 Call Hold Parameters............................................................................ 521
A.11.5.5 Call Transfer Parameters...................................................................... 522
A.11.5.6 Emergency Call Parameters ................................................................. 523
A.11.5.7 Call Cut-Through Parameters............................................................... 524
A.11.5.8 MLPP Parameters................................................................................. 524
A.11.5.9 TTY/TDD Parameters............................................................................ 528
A.11.6 PSTN Parameters..................................................................................................528
A.11.6.1 General Parameters.............................................................................. 528

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A.11.6.2 TDM Bus and Clock Timing Parameters............................................... 532
A.11.6.3 CAS Parameters ................................................................................... 534
A.11.6.4 ISDN Parameters.................................................................................. 537
A.11.7 ISDN and CAS Interworking Parameters ..............................................................544
A.11.8 Answer and Disconnect Supervision Parameters.................................................561
A.11.9 Tone Parameters...................................................................................................564
A.11.9.1 Telephony Tone Parameters................................................................. 564
A.11.9.2 Tone Detection Parameters.................................................................. 566
A.11.9.3 Metering Tone Parameters ................................................................... 568
A.11.10Trunk Groups and Routing Parameters.................................................................569
A.11.11Alternative Routing Parameters.............................................................................576
A.11.12Number Manipulation Parameters.........................................................................579
A.11.13LDAP Parameters..................................................................................................591
A.11.14Least Cost Routing Parameters ............................................................................592
A.12 Standalone Survivability Parameters...................................................................593
A.13 IP Media Parameters ...........................................................................................597
A.14 Auxiliary and Configuration Files Parameters......................................................602
A.14.1 Auxiliary and Configuration File Name Parameters ..............................................602
A.14.2 Automatic Update Parameters ..............................................................................603
BDialing Plan Notation for Routing and Manipulation....................................607
CSIP Message Manipulation Syntax.................................................................609
C.1 Actions .................................................................................................................609
C.2 Header Types.......................................................................................................609
C.2.1 Accept....................................................................................................................609
C.2.2 Accept-Language...................................................................................................610
C.2.3 Allow ......................................................................................................................610
C.2.4 Call-Id.....................................................................................................................611
C.2.5 Contact...................................................................................................................611
C.2.6 Cseq.......................................................................................................................612
C.2.7 Diversion................................................................................................................612
C.2.8 Event......................................................................................................................613
C.2.9 From.......................................................................................................................614
C.2.10 History-Info ............................................................................................................614
C.2.11 Min-Se and Min-Expires ........................................................................................615
C.2.12 P-Asserted-Identity................................................................................................616
C.2.13 P-Associated-Uri....................................................................................................616
C.2.14 P-Called-Party-Id ...................................................................................................617
C.2.15 P-Charging-Vector.................................................................................................618
C.2.16 P-Preferred-Identity ...............................................................................................618
C.2.17 Privacy...................................................................................................................619
C.2.18 Proxy-Require........................................................................................................619
C.2.19 Reason...................................................................................................................620
C.2.20 Referred-By ...........................................................................................................621
C.2.21 Refer-To.................................................................................................................621
C.2.22 Remote-Party-Id ....................................................................................................622
C.2.23 Request-Uri............................................................................................................623
C.2.24 Require ..................................................................................................................624
C.2.25 Resource-Priority...................................................................................................625
C.2.26 Retry-After .............................................................................................................625
C.2.27 Server or User-Agent.............................................................................................626
C.2.28 Service-Route........................................................................................................626
C.2.29 Session-Expires.....................................................................................................627
C.2.30 Subject...................................................................................................................628
C.2.31 Supported..............................................................................................................628
C.2.32 To...........................................................................................................................629

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C.2.33 Unsupported ..........................................................................................................630
C.2.34 Via..........................................................................................................................630
C.2.35 Warning .................................................................................................................631
C.2.36 Unknown Header...................................................................................................632
C.3 Structure Definitions.............................................................................................633
C.3.1 Event Structure......................................................................................................633
C.3.2 Host........................................................................................................................633
C.3.3 MLPP.....................................................................................................................633
C.3.4 Privacy Struct.........................................................................................................634
C.3.5 Reason Structure...................................................................................................634
C.3.6 SIPCapabilities ......................................................................................................634
C.3.7 URL........................................................................................................................635
C.4 Random Type.......................................................................................................636
C.4.1 Random Strings.....................................................................................................636
C.4.2 Random Integers...................................................................................................636
C.5 Wildcarding for Header Removal.........................................................................636
C.6 Copying Information between Messages using Variables ...................................637
C.7 Enum Definitions..................................................................................................638
C.7.1 AgentRole..............................................................................................................638
C.7.2 Event Package.......................................................................................................638
C.7.3 MLPP Reason Type...............................................................................................639
C.7.4 Number Plan..........................................................................................................639
C.7.5 NumberType..........................................................................................................639
C.7.6 Privacy...................................................................................................................640
C.7.7 Reason (Diversion)................................................................................................640
C.7.8 Reason (Reason Structure)...................................................................................640
C.7.9 Reason (Remote-Party-Id).....................................................................................643
C.7.10 Refresher...............................................................................................................643
C.7.11 Screen....................................................................................................................643
C.7.12 ScreenInd ..............................................................................................................644
C.7.13 TransportType .......................................................................................................644
C.7.14 Type.......................................................................................................................644
C.8 Actions and Types................................................................................................645
C.9 Syntax..................................................................................................................649
DDSP Templates................................................................................................655
ESelected Technical Specifications.................................................................657

Version 6.4 13 November 2011
SIP User's Manual Notices
Notice
This document describes the AudioCodes Mediant 2000 Voice-over-IP (VoIP) media gateway,
.
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.
© Copyright 2011 AudioCodes Ltd. All rights reserved.
This document is subject to change without notice.
Date Published: November-07-2011
Trademarks
AudioCodes, AC, AudioCoded, Ardito, CTI2, CTI², CTI Squared, HD VoIP, HD VoIP
Sounds Better, InTouch, IPmedia, Mediant, MediaPack, NetCoder, Netrake, Nuera, Open
Solutions Network, OSN, Stretto, TrunkPack, VMAS, VoicePacketizer, VoIPerfect,
VoIPerfectHD, What’s Inside Matters, Your Gateway To VoIP and 3GX are trademarks or
registered trademarks of AudioCodes Limited. All other products or trademarks are
property of their respective owners. Product specifications are subject to change without
notice.
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 service are generally provided by AudioCodes’
Distributors, Partners, and Resellers from whom the product was purchased. For technical
support for products purchased directly from AudioCodes, or for customers subscribed to
AudioCodes Customer Technical Support (ACTS), contact [e-mail].
Abbreviations and Terminology
Each abbreviation, unless widely used, is spelled out in full when first used.

SIP User's Manual 14 Document #: LTRT-68814
Mediant 2000
Related Documentation
Manual Name
SIP CPE Release Notes
Product Reference Manual for SIP CPE Devices
Mediant 2000 Hardware Installation Manual
CPE Configuration Guide for IP Voice Mail
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, you can refer to AudioCodes Recommended Security Guidelines
document.
Note: Throughout this manual, unless otherwise specified, the term device refers to
the Mediant 2000.
Note: Before configuring the device, ensure that it is installed correctly as instructed
in the Hardware Installation Manual.
Note: The terms IP-to-Tel and Tel-to-IP refer to the direction of the call relative to
the device. IP-to-Tel refers to calls received from the IP network and destined
to the PSTN/PBX (i.e., telephone connected directly or indirectly to the
device); Tel-to-IP refers to calls received from the PSTN/PBX and destined
for the IP network.

Version 6.4 15 November 2011
SIP User's Manual 1. Overview
1 Overview
This manual provides you with the information for installing, configuring, and operating the
Mediant 2000 SIP gateway (referred to throughout this manual as device).
The device is a SIP-based Voice-over-IP (VoIP) media gateway. the device enables voice,
fax, and data traffic to be sent over the same IP network.
The device provides excellent voice quality and optimized packet voice streaming over IP
networks. The device uses the award-winning, field-proven VoIPerfect™ voice
compression technology.
The device incorporates 1, 2, 4, 8 or 16 E1, T1, or J1 spans for direct connection to the
Public Switched Telephone Network (PSTN) / Private Branch Exchange (PBX) through
digital telephony trunks. The device also provides SIP trunking capabilities for Enterprises
operating with multiple Internet Telephony Service Providers (ITSP) for VoIP services. The
device includes two 10/100Base-TX Ethernet ports, providing redundancy connection to
the network.
The device supports up to 480 simultaneous VoIP or Fax over IP (FoIP) calls, supporting
various Integrated Services Digital Network (ISDN) Primary Rate Interface (PRI) protocols
such as EuroISDN, North American NI2, Lucent™ 4/5ESS, Nortel™DMS-100 and others.
In addition, it supports different variants of Channel Associated Signaling (CAS) protocols
for E1 and T1 spans, including MFC R2, E&M immediate start, E&M delay dial/start, loop
start and ground start.
The device, best suited for large and medium-sized VoIP applications is a compact device,
comprising a 19-inch, 1U chassis with optional dual AC or single DC power supplies. The
deployment architecture can include several devices in branch or departmental offices,
connected to local PBXs. Call routing is performed by the devices using internal routing or
SIP Proxy(s).
The device enables users to make cost-effective, long distance or international
telephone/fax calls between distributed company offices, using their existing
telephones/fax. These calls can be routed over the existing network using state-of-the-art
compression techniques, ensuring that voice traffic uses minimum bandwidth.
The device can also route calls over the network using SIP signaling protocol, enabling the
deployment of Voice over Packet solutions in environments where access is enabled to
PSTN subscribers by using a trunking device. This provides the ability to transmit voice
and telephony signals between a packet network and a TDM network.
Notes:
•The device is offered as a 1-module (up to 240 channels or 8 trunk
spans) or 2-module (for 480 channels or 16 trunk spans only) platform.
The latter configuration supports two TrunkPack modules, each having
its own IP address. Configuration instructions in this document relate to
the device as a 1-module platform and must be repeated for the second
module as well.
•For channel capacity, refer to the device's specifications in ''Selected
Technical Specifications'' on page 657.

SIP User's Manual 16 Document #: LTRT-68814
Mediant 2000
The figure below illustrates a typical device applications VoIP network:
1.1 SIP Overview
Session Initiation Protocol (SIP) is an application-layer control (signaling) protocol used on
the gateway for creating, modifying, and terminating sessions with one or more
participants. These sessions can include Internet telephone calls, media announcements,
and conferences.
SIP invitations are used to create sessions and carry session descriptions that enable
participants to agree on a set of compatible media types. SIP uses elements called Proxy
servers to help route requests to the user's current location, authenticate and authorize
users for services, implement provider call-routing policies and provide features to users.
SIP also provides a registration function that enables users to upload their current locations
for use by Proxy servers. SIP implemented in the gateway, complies with the Internet
Engineering Task Force (IETF) RFC 3261 (refer to http://www.ietf.org).

Part I
Getting Started
Before you can begin configuring your device, you need to access it with the default LAN
IP address and change this IP address to suit your networking scheme. Once modified,
you can then access the device using the new LAN IP address. This section describes how
to perform this initialization process.

Reader’s Notes

Version 6.4 19 November 2011
SIP User's Manual 2. Assigning the VoIP LAN IP Address
2 Assigning the VoIP LAN IP Address
This section describes how to change the default VoIP LAN IP address so that it
corresponds to your networking scheme.
The default VoIP LAN IP address is listed in the table below:
Table 2-1: Default VoIP LAN IP Address
IP Address Value
IP Address Device with single module (trunks 1-8): 10.1.10.10
Device's second module (trunks 9-16): 10.1.10.11
Subnet Mask 255.255.0.0
Default Gateway IP Address 0.0.0.0
You can use any of the following management tools to change the default VoIP LAN IP
address:
Embedded command line interface (CLI) - see ''Using CLI'' on page 19
Embedded HTTP-based Web server - see ''Using the Web Interface'' on page 20
Bootstrap Protocol (BootP) - see Using BootP/TFTP Server on page 21
2.1 Using CLI
The procedure below describes how to assign a VoIP LAN IP address, using CLI.
Note: The RS-232 interface port is available only when the device is installed with
blades supporting 1-, 2-, or 4-spans.
To assign a LAN IP address using CLI:
1. Connect the RS-232 port of the device to the serial communication port on your
computer. For more information, refer to the Hardware Installation Manual.
2. Establish a serial communication link with the device using a terminal emulator
program (such as HyperTerminal) with the following communication port settings:
•Baud Rate: 115,200 bps
•Data Bits: 8
•Parity: None
•Stop Bits: 1
•Flow Control: None
3. At the prompt, type the following command to access the configuration folder, and
then press Enter:
conf
4. At the prompt, type the following command to view the current network settings, and
then press Enter:
GCP IP

SIP User's Manual 20 Document #: LTRT-68814
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5. At the prompt, typing the following command to change the network settings, and then
press Enter:
SCP IP <ip_address> <subnet_mask> <default_gateway>
You must enter all three network parameters, each separated by a space, for
example:
SCP IP 10.13.77.7 255.255.0.0 10.13.0.1
6. At the prompt, type the following command to save the settings and reset the device,
and then press Enter:
SAR
2.2 Using the Web Interface
The procedure below describes how to assign a LAN IP address, using the Web interface.
To assign an IP address using the Web interface:
1. Disconnect any network cables from the device.
2. Connect one of the LAN ports (on the rear panel, labeled ETH) of the device directly to
the network interface of your computer, using a straight-through Ethernet cable.
Figure 2-1: Initial Connectivity
3. Change the IP address and subnet mask of your computer to correspond with the
default IP address and subnet mask of the device.
4. On your computer, start a Web browser and in the URL address field, enter the default
IP address of the device; the Web interface's Login screen appears:
Figure 2-2: Login Screen