Inalp Networks SmartWare R2.00 User manual

Software
Configuration
Guide
SmartWare Release 2.00
Customer Deliverable Documentation
Part Number 80-0123
English
Revision 1.03, March 14, 2002

Legal Notice 3
LEGAL NOTICE
Copyright © 2001 Inalp Networks AG
All rights reserved. No part of this publication may be reproduced without prior written permission
from Inalp Networks AG.
Inalp Networks AG reserves the right to make changes in specifications and other information
contained in this document without prior notice. The information provided is subject to change
without notice.
In no event shall Inalp Networks AG or its employees and associated companies be liable for any
incidental, special, indirect or consequential damages whatsoever, including but not limited to lost
profits, arising out of or related to this manual or the information contained within it, even if Inalp
Networks AG has been advised of, known, or should have known, the possibility of such damages.
Inalp, the Inalp Logo, and SmartNode are registered trademarks of Inalp Networks AG. SmartWare
and SmartView are trademarks of Inalp Networks AG. All other trademarks mentioned in this
document are property of their respective owners.
EU Declaration of Conformity
The EU Directives covered by this Declaration
89/336/EEC Electromagnetic Compatibility Directive, amended by 92/31/EEC & 93/68/EEC
72/23/EEC Low Voltage Equipment Directive, amended by 93/68/EEC
Note: During the transition period, products may not comply with the Low Voltage Directive.
The Products covered by this Declaration
The products covered by this declaration are the SmartNode 1000 and 2000 family series devices.
The Basis on which Conformity is being Declared
The products identified above comply with the requirements of the above EU directives by meeting
the following standards:
• Safety compliance: EN 60950
• EMC compliance: EN 55022, EN 55024
• ETSI TBR3 (BRI)
• TBR4 (PRI)
The CE mark was first applied in 2000.
Inalp Networks AG
Meriedweg 7
CH-3172 Niederwangen
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4 Table of Contents
TABLE OF CONTENTS
1Terms and Definitions ........................................................................................................................... 14
1.1 Introduction ...................................................................................................................................... 14
1.2 SmartWare Architecture Terms and Definitions ......................................................................... 14
2Applications ......................................................................................................................................... 21
2.1 Introduction ...................................................................................................................................... 21
2.2 Carrier Networks.............................................................................................................................. 21
2.3 Enterprise Networks........................................................................................................................ 22
2.4 LAN Telephony................................................................................................................................ 23
3System Overview ................................................................................................................................ 25
3.1 Introduction ...................................................................................................................................... 25
3.2 SmartNode Hardware Platforms ................................................................................................... 26
3.3 SmartWare Embedded Software.................................................................................................... 27
3.4 SmartView Management Tools ...................................................................................................... 28
4Configuration Concepts..................................................................................................................... 29
4.1 Introduction and Overview ............................................................................................................ 29
4.2 Contexts and Gateways................................................................................................................... 30
4.2.1 Context....................................................................................................................................... 30
4.2.2 Gateway..................................................................................................................................... 30
4.3 Interfaces, Ports and Bindings........................................................................................................ 30
4.3.1 Interfaces.................................................................................................................................... 30
4.3.2 Ports and Circuits..................................................................................................................... 31
4.3.3 Bindings..................................................................................................................................... 31
4.4 Profiles and Use commands ........................................................................................................... 32
4.4.1 Profiles ....................................................................................................................................... 32
4.4.2 Use Commands......................................................................................................................... 32
5Command Line Interface ................................................................................................................... 33
5.1 Command Modes............................................................................................................................. 33
5.1.1 System Prompt.......................................................................................................................... 34
5.1.2 Navigating the CLI................................................................................................................... 35
5.2 Command Editing............................................................................................................................ 37
5.2.1 Command Help ........................................................................................................................ 37
5.2.2 The No Form ............................................................................................................................. 37
5.2.3 Command Completion............................................................................................................ 37
5.2.4 Command History.................................................................................................................... 37
5.2.5 Command Editing Shortcuts .................................................................................................. 37
6Accessing the SmartWare Command Line Interface .................................................................... 40
6.1 Introduction ...................................................................................................................................... 40
6.2 Warning............................................................................................................................................. 40
6.3 Accessing the SmartWare Command Line Interface Task List.................................................. 40
6.4 Accessing via the Console Port ...................................................................................................... 41
6.4.1 Console Port Procedure........................................................................................................... 41
6.5 Accessing via a Telnet Session........................................................................................................ 42
6.5.1 Telnet Procedure....................................................................................................................... 43
6.6 Log On to SmartWare...................................................................................................................... 43
6.6.1 Warning ..................................................................................................................................... 44
6.7 Selecting a Secure Password........................................................................................................... 44
6.8 Configure Operators and Administrators .................................................................................... 44
6.9 Factory Preset Administrator Account.......................................................................................... 44
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6.10 Create an Operator Account........................................................................................................... 45
6.11 Create an Administrator Account.................................................................................................. 45
6.12 Displaying the CLI Version ............................................................................................................ 46
6.13 Display Account Information......................................................................................................... 46
6.14 Switching to Another Account....................................................................................................... 47
6.15 Checking Identity and Connected Users ...................................................................................... 47
6.16 End a Telnet or Console Port Session............................................................................................ 48
7Establishing Basic IP Connectivity.................................................................................................. 50
7.1 Introduction ...................................................................................................................................... 50
7.2 IP Context Selection and Basic Interface Configuration Tasks.................................................. 50
7.3 Enter the IP Context, Create IP Interfaces and Assign an IP Address...................................... 50
7.4 Define IP Ethernet Encapsulation and Bind IP Interface to Physical Port ............................... 51
7.5 Activating a Physical Port............................................................................................................... 52
7.6 Display IP Interface Information ................................................................................................... 53
7.7 Delete IP Interfaces .......................................................................................................................... 53
7.8 Examples ........................................................................................................................................... 54
7.8.1 Setting Up an IP Interface on an Ethernet Port.................................................................... 54
8System Image Handling .................................................................................................................... 56
8.1 Introduction ...................................................................................................................................... 56
8.2 Memory Regions in SmartWare..................................................................................................... 56
8.3 Boot Procedure and Bootloader ..................................................................................................... 58
8.4 Factory Configuration ..................................................................................................................... 59
8.5 Warning............................................................................................................................................. 60
8.6 System Image Handling Task List................................................................................................. 60
8.7 Display System Image Information............................................................................................... 60
8.8 Copy System Images from a Network Server to Flash Memory............................................... 61
8.9 Copy Driver Software from a Network Server to Flash Memory ............................................. 62
9Configuration File Handling ................................................................................................................ 64
9.1 Introduction ...................................................................................................................................... 64
9.1.1 Understanding Configuration Files....................................................................................... 65
9.2 Factory Configuration ..................................................................................................................... 66
9.3 Warnings ........................................................................................................................................... 67
9.4 Configuration File Handling Task List ......................................................................................... 67
9.5 Copy Configurations within the Local Memory.......................................................................... 67
9.6 Replacing the Startup Configuration with a Configuration from Flash Memory................... 69
9.7 Copy Configurations to and from a Remote Storage Location.................................................. 70
9.8 Replacing the Startup Configuration with a Configuration downloaded from TFTP Server71
9.9 Displaying Configuration File Information.................................................................................. 72
9.10 Modifying the Running Configuration at the CLI....................................................................... 72
9.11 Modifying the Running Configuration Offline............................................................................ 73
9.12 Deleting a Specified Configuration ............................................................................................... 74
10 Basic System Management............................................................................................................ 76
10.1 Overview........................................................................................................................................... 76
10.2 Basic System Management Configuration Task List................................................................... 76
10.3 Setting System Information ............................................................................................................ 76
10.4 Setting the System Banner .............................................................................................................. 78
10.5 Setting Time and Date ..................................................................................................................... 79
10.6 Display Clock Information ............................................................................................................. 79
10.7 Display Time since last Restart ...................................................................................................... 80
10.8 Configuring and Starting the Web Server .................................................................................... 80
10.9 Determining and Defining the active CLI Version...................................................................... 81
10.10 Restarting The System..................................................................................................................... 81
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10.11 Displaying the System Event Log .................................................................................................. 82
10.12 Displaying the System Reset Log................................................................................................... 82
10.13 Controlling Command Execution .................................................................................................. 83
10.14 Displaying the Checksum of a Configuration.............................................................................. 84
11 IP Context Overview........................................................................................................................... 85
11.1 Introduction ...................................................................................................................................... 85
11.2 IP Context Overview Configuration Task List............................................................................. 86
11.3 Planning your IP Configuration..................................................................................................... 87
11.3.1 IP Interface Related Information ............................................................................................ 87
11.3.2 Serial Interface Related Information...................................................................................... 87
11.3.3 QoS Related Information......................................................................................................... 88
11.4 Configuring Ethernet and Serial Ports .......................................................................................... 88
11.5 Creating and Configuring IP Interfaces ........................................................................................ 88
11.6 Configuring NAPT........................................................................................................................... 89
11.7 Configuring Static IP Routing ........................................................................................................ 89
11.8 Configuring RIP................................................................................................................................ 89
11.9 Configuring Access Control Lists .................................................................................................. 90
11.10 Configuring Quality of Service....................................................................................................... 90
12 IP Interface Configuration............................................................................................................. 91
12.1 Introduction ...................................................................................................................................... 91
12.2 IP Interface Configuration Task List.............................................................................................. 91
12.3 Creating an IP Interface................................................................................................................... 91
12.4 Deleting an IP Interface ................................................................................................................... 92
12.5 Setting the IP Address and Netmask............................................................................................. 93
12.6 ICMP Message Processing .............................................................................................................. 93
12.7 ICMP Redirect Messages................................................................................................................. 94
12.8 Router Advertisement Broadcast Message................................................................................... 94
12.9 Defining the MTU of the Interface................................................................................................. 95
12.10 Configuring an Interface as a Point-to-Point Link....................................................................... 96
12.11 Displaying IP Interface Information.............................................................................................. 96
12.12 Testing Connections with the ping Command ............................................................................ 97
12.13 Examples ........................................................................................................................................... 98
12.13.1 Deleting an IP Interface Example....................................................................................... 98
13 NAPT Configuration ...................................................................................................................... 99
13.1 Overview ........................................................................................................................................... 99
13.2 Configuring Network Address Port Translation......................................................................... 99
13.3 NAPT Configuration Task List....................................................................................................... 99
13.4 Creating a NAPT Profile ............................................................................................................... 100
13.5 Adding a Static NAPT Entry ........................................................................................................ 100
13.6 Removing a Static NAPT Entry.................................................................................................... 101
13.7 Configuring an ICMP Default Server.......................................................................................... 101
13.8 Removing an ICMP Default Server ............................................................................................. 102
13.9 Configuring an NAPT Interface................................................................................................... 102
13.10 Display NAPT Configuration Information................................................................................. 103
14 Ethernet Port Configuration........................................................................................................ 104
14.1 Introduction .................................................................................................................................... 104
14.2 Ethernet Port Configuration Task List ........................................................................................ 104
14.3 Entering the Ethernet Port Configuration Mode ....................................................................... 104
14.4 Configuring Medium for an Ethernet Port ................................................................................. 105
14.5 Configuring Ethernet Encapsulation Type for an Ethernet Port ............................................. 106
14.6 Binding An Ethernet Port to an IP Interface............................................................................... 106
14.7 Selecting The Frame Format for an Ethernet Port ..................................................................... 107
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14.8 Configuring Layer 2 CoS to Service Class Mapping for an Ethernet Port ............................. 108
14.9 Adding a Receive Mapping Table Entry..................................................................................... 109
14.10 Adding a Transmit Mapping Table Entry .................................................................................. 109
14.11 Closing an Ethernet Port ............................................................................................................... 110
15 Link Scheduler Configuration....................................................................................................112
15.1 Introduction .................................................................................................................................... 112
15.2 Quick References............................................................................................................................ 113
15.2.1 Setting the Modem Rate........................................................................................................ 114
15.3 Command Cross Reference .......................................................................................................... 114
15.4 Link Scheduler Configuration Task List.....................................................................................115
15.5 Defining the Access Control List Profile..................................................................................... 115
15.5.1 Packet Classification .............................................................................................................. 115
15.5.2 Creating an Access Control List........................................................................................... 116
15.6 Assigning Bandwidth to Traffic Classes.....................................................................................117
15.7 Creating a Top-Level Service Policy Profile ............................................................................... 120
15.8 Specifying Source Classes or Lower Level Source Policy Profiles .......................................... 122
15.8.1 Defining Fair Queuing Weight.............................................................................................122
15.8.2 Defining the Bit-Rate ............................................................................................................. 123
15.8.3 Defining Absolute Priority.................................................................................................... 123
15.8.4 Defining the Maximum Queue Length............................................................................... 124
15.8.5 Specifying the Type-Of-Service (TOS) Field....................................................................... 124
15.8.6 Specifying the Precedence Field........................................................................................... 125
15.8.7 Specifying Differentiated Services Codepoint Marking ................................................... 125
15.8.8 Specifying Layer 2 Marking.................................................................................................. 127
15.8.9 Defining Random Early Detection....................................................................................... 128
15.8.10 Discarding Excess Load..................................................................................................... 128
15.9 Devoting the Service Policy Profile to an Interface ................................................................... 129
15.10 Displaying Link Arbitration Status ............................................................................................. 130
15.11 Displaying Link Scheduling Profile Information ...................................................................... 131
15.12 Enable Statistics Gathering ........................................................................................................... 131
16 Serial Port Configuration ............................................................................................................ 133
16.1 Introduction .................................................................................................................................... 133
16.2 Serial Port Configuration Task List ............................................................................................. 133
16.3 Disabling an Interface.................................................................................................................... 134
16.4 Enabling an Interface..................................................................................................................... 134
16.5 Configuring the Serial Encapsulation Type ............................................................................... 135
16.6 Configuring the Hardware Port Protocol ................................................................................... 136
16.7 Defining the Transmit Data Clock Edge..................................................................................... 137
16.8 Enter Frame Relay Mode .............................................................................................................. 137
16.9 Configuring the LMI Type............................................................................................................ 138
16.10 Configuring the Keepalive Interval............................................................................................. 138
16.11 Enabling Fragmentation................................................................................................................ 139
16.12 Entering Frame Relay PVC Configuration Mode...................................................................... 139
16.13 Configuring the PVC Encapsulation Type ................................................................................. 140
16.14 Binding the Frame Relay PVC to IP Interface ............................................................................ 141
16.15 Disabling a Frame Relay PVC ...................................................................................................... 142
16.16 Displaying Frame Relay Information.......................................................................................... 142
16.17 Examples ......................................................................................................................................... 143
16.17.1 Displaying Serial Port Information.................................................................................. 143
16.17.2 Displaying Frame Relay Information.............................................................................. 143
16.17.3 Integrated Service Access.................................................................................................. 144
17 Basic IP Routing Configuration ..................................................................................................... 147
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17.1 Introduction .................................................................................................................................... 147
17.2 Basic IP Routing Configuration Task List...................................................................................148
17.3 Configuring Static IP Routes......................................................................................................... 148
17.4 Deleting Static IP Routes ............................................................................................................... 149
17.5 Displaying IP Route Information................................................................................................. 149
17.6 Examples ......................................................................................................................................... 150
17.6.1 Basic Static IP Routing Example........................................................................................... 150
18 Routing Information Protocol (RIP) Configuration................................................................ 152
18.1 Introduction .................................................................................................................................... 152
18.2 Routing Protocol............................................................................................................................. 152
18.3 RIP Configuration Task List ......................................................................................................... 153
18.4 Enabling Send RIP.......................................................................................................................... 153
18.5 Enabling an Interface to Receive RIP........................................................................................... 154
18.6 Specifying the Send RIP Version.................................................................................................. 154
18.7 Specifying the Receive RIP Version............................................................................................. 155
18.8 Enabling RIP Learning................................................................................................................... 155
18.9 Enabling an Interface to Receive RIP........................................................................................... 156
18.10 Enabling RIP Announcing ............................................................................................................ 156
18.11 Enabling RIP Auto Summarization ............................................................................................. 157
18.12 Specifying The Default Route Metric .......................................................................................... 158
18.13 Enabling RIP Split-Horizon Processing....................................................................................... 158
18.14 Enabling The Poison Reverse Algorithm.................................................................................... 159
18.15 Enabling Holding Down Aged Routes ....................................................................................... 160
18.16 Displaying RIP Configuration of an IP Interface ....................................................................... 160
18.17 Displaying Global RIP Information............................................................................................. 161
19 Access Control List Configuration............................................................................................. 162
19.1 About Access Control Lists........................................................................................................... 162
19.1.1 What Access Lists Do............................................................................................................. 162
19.1.2 Why You Should Configure Access Lists ........................................................................... 162
19.1.3 When to Configure Access Lists...........................................................................................163
19.1.4 Features of Access Control Lists........................................................................................... 163
19.2 Access Control List Configuration Task List.............................................................................. 164
19.3 Map Out the Goals of the Access Control List ........................................................................... 164
19.4 Create an Access Control List Profile and Enter Configuration Mode................................... 165
19.5 Add a Filter Rule to the Current Access Control List Profile................................................... 165
19.6 Add an ICMP Filter Rule to the Current Access Control List Profile ..................................... 166
19.7 Add a TCP, UDP or SCTP Filter Rule to the Current Access Control List Profile ................ 168
19.8 Bind and Unbind an Access Control List Profile to an IP Interface ........................................ 170
19.9 Display an Access Control List Profile........................................................................................ 172
19.10 Debug an Access Control List Profile.......................................................................................... 172
19.11 Examples ......................................................................................................................................... 173
19.11.1 Deny a Specific Subnet ...................................................................................................... 173
20 CS Context Overview ................................................................................................................... 175
20.1 Introduction .................................................................................................................................... 175
20.2 CS Context Configuration Task List ............................................................................................ 176
20.3 Plan the CS Configuration ............................................................................................................ 176
20.4 Configure General CS Settings..................................................................................................... 178
20.5 Configure Call Routing ................................................................................................................. 180
20.5.1 Create and Configure CS Interfaces..................................................................................... 180
20.5.2 Specify Call Routing .............................................................................................................. 181
20.6 Configure Dial Tones..................................................................................................................... 181
20.7 Configure Voice over IP Parameters ........................................................................................... 181
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20.8 Configure ISDN Ports.................................................................................................................... 182
20.9 Configure an ISoIP VoIP Connection.......................................................................................... 182
20.10 Configure a H.323 VoIP Connection ........................................................................................... 182
20.11 Activate CS Context Configuration............................................................................................. 183
20.12 Example........................................................................................................................................... 185
20.12.1 Configure SmartNode in an Enterprise Network.......................................................... 185
21 CS Interface Configuration ......................................................................................................... 193
21.1 Introduction .................................................................................................................................... 193
21.2 CS Interface Configuration Task List .......................................................................................... 194
21.3 Create and Configure CS interfaces............................................................................................. 195
21.4 Configure Call Routing ................................................................................................................. 196
21.5 Configure Digit Collection............................................................................................................ 197
21.6 Configure Direct Call Signaling on VoIP Interfaces.................................................................. 198
21.7 Specify the Port Address on VoIP interfaces.............................................................................. 199
21.8 Bind PSTN Interfaces to PSTN Ports and Create Line Hunt Groups ..................................... 200
21.9 Examples ......................................................................................................................................... 201
21.9.1 V5 Carrier Access ................................................................................................................... 201
21.9.2 Q.SIG PBX Networking......................................................................................................... 203
22 Session Router Configuration ....................................................................................................206
22.1 Introduction .................................................................................................................................... 206
22.1.1 Routing Table Structure ........................................................................................................ 207
22.2 Warning........................................................................................................................................... 208
22.3 Session Router Configuration Task List...................................................................................... 208
22.4 Map out the Goals for the Session Router .................................................................................. 208
22.5 Configure the Entry Table on Circuit Interfaces........................................................................ 209
22.6 Configure Session Routing Tables............................................................................................... 209
22.6.1 Broadcast Handling in the Session Router ......................................................................... 209
22.6.2 Configure Number Prefix for ISDN Number Types......................................................... 209
22.6.3 Create a Called Party Number Routing Table ................................................................... 210
22.6.4 Create a Calling Party Number Routing Table.................................................................. 211
22.6.5 Create a Bearer Capability Routing Table .......................................................................... 212
22.6.6 Create a Time of Day Routing Table ................................................................................... 213
22.6.7 Create a Day of Week Routing Table .................................................................................. 213
22.6.8 Create a Date Routing Table................................................................................................. 214
22.7 Configure Number Manipulation Functions ............................................................................. 214
22.7.1 Create a Number Replacement Table.................................................................................. 215
22.7.2 Create Complex Number Manipulation Functions........................................................... 216
22.8 Deleting Routing Tables and Functions......................................................................................216
22.9 Activate the Session Router Configuration ................................................................................ 217
22.10 Example........................................................................................................................................... 218
22.10.1 Enterprise Network with Local Breakout and IP Carrier Access................................ 218
23 Tone Configuration ...................................................................................................................... 222
23.1 Introduction .................................................................................................................................... 222
23.2 Tone Configuration Task List....................................................................................................... 223
23.3 Configure Call-Progress-Tone Profiles ....................................................................................... 223
23.4 Configure Tone-Set Profiles.......................................................................................................... 225
23.5 Use Tone-Set Profiles..................................................................................................................... 226
23.6 Generation of Local In-Band Tones ............................................................................................. 226
23.7 Show Call-Progress-Tone and Tone-Set Profiles ....................................................................... 227
23.8 Example........................................................................................................................................... 228
23.8.1 Tone Configuration................................................................................................................ 228
24 ISDN Port Configuration ............................................................................................................ 230
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24.1 Introduction .................................................................................................................................... 230
24.1.1 ISDN Reference Points........................................................................................................... 230
24.1.2 Possible SmartNode Port Configurations ........................................................................... 231
24.1.3 ISDN UNI signalling.............................................................................................................. 232
24.2 Warnings ......................................................................................................................................... 233
24.3 ISDN Port Configuration Task List.............................................................................................. 233
24.4 Shutdown and Enable ISDN Ports............................................................................................... 233
24.5 Configure Common BRI and PRI Parameters............................................................................ 234
24.6 Configure BRI port parameters .................................................................................................... 235
24.7 Configure PRI Port Parameters .................................................................................................... 236
24.8 Example ........................................................................................................................................... 238
25 Gateway Configuration................................................................................................................ 239
25.1 Introduction .................................................................................................................................... 239
25.2 Gateway Configuration Task List ................................................................................................ 240
25.3 Configure Codec Selection and Fast Connect ............................................................................ 240
25.3.1 Introduction ............................................................................................................................ 240
25.3.2 Configure used Codec for an ISoIP Connection ................................................................ 241
25.3.3 Configure used Codec for an H.323 Connection and Enable Fast Connect ................... 242
25.4 Configure Registration Authentication Service (RAS) in an H.323 Gateway ........................ 244
25.5 Enable Q.931 tunneling for an H.323 connection....................................................................... 245
25.6 Enable the Gateway Configuration.............................................................................................. 246
25.7 Examples ......................................................................................................................................... 247
25.7.1 Branch Offices in an Enterprise Network ........................................................................... 247
25.7.2 Gatekeeper in LAN Based Telephony ................................................................................. 249
26 VoIP Profile Configuration ............................................................................................................. 251
26.1 Introduction .................................................................................................................................... 251
26.2 VoIP Profile Configuration Task List .......................................................................................... 252
26.3 Create a VoIP Profile...................................................................................................................... 252
26.4 Enable DTMF Relay ....................................................................................................................... 253
26.5 Enable Echo Canceller ................................................................................................................... 254
26.6 Enable Silence Compression......................................................................................................... 255
26.7 Configure Voice Volume............................................................................................................... 256
26.8 Configure Dejitter Buffer (Advanced)......................................................................................... 257
26.9 Enable/Disable Filters (Advanced) .............................................................................................. 260
26.10 Show VoIP Profile Configuration and Assign it to a VoIP gateway....................................... 261
26.11 Example ........................................................................................................................................... 263
26.11.1 Home Office in an Enterprise Network .......................................................................... 263
27 VoIP Debugging............................................................................................................................ 265
27.1 Introduction .................................................................................................................................... 265
27.2 Debugging Strategy ....................................................................................................................... 265
27.3 Warning........................................................................................................................................... 266
27.4 Debugging Task List...................................................................................................................... 266
27.5 Verify IP Connectivity ................................................................................................................... 266
27.6 Verify Circuit Switch Connectivity.............................................................................................. 267
27.7 Debug ISDN Data........................................................................................................................... 270
27.8 Debug H.323 Data .......................................................................................................................... 270
27.9 Debug ISoIP Data ........................................................................................................................... 271
27.10 Debug Session Control Data......................................................................................................... 271
27.11 Debug Voice Over IP Data............................................................................................................ 272
27.12 Check Event Logs........................................................................................................................... 272
27.13 How to Submit Trouble Reports to Inalp....................................................................................273
28 SNMP Configuration.................................................................................................................... 275
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