AudioCodes Mediant 3000 Manuel utilisateur

Mediant™ 3000

VoIP Media Gateway

SIP Protocol

User’s Manual

Version 6.4

November 2011

Document # LTRT-89712

Version 6.4 3 November 2011

SIP User's Manual Contents

Table of Contents

1Overview ............................................................................................................17

1.1 Mediant 3000 High Availability System..................................................................18

1.1.1 Initialization Process................................................................................................20

1.1.2 Configuration Stages...............................................................................................20

1.1.3 Blade Failure Detection ...........................................................................................21

1.2Functional Block Diagrams ....................................................................................22

1.3 SIP Overview .........................................................................................................24

Part I: Getting Started..............................................................................................25

2Assigning the VoIP LAN IP Address................................................................27

2.1 Using CLI ...............................................................................................................27

2.2 Using the Web Interface.........................................................................................28

2.3 Using BootP/TFTP Server......................................................................................29

2.4 Assigning an IP Address for Mediant 3000 HA......................................................31

2.4.1 Using the Web Interface..........................................................................................32

2.4.2 Using the EMS.........................................................................................................34

Part II: Management Tools......................................................................................37

3Web-Based Management..................................................................................39

3.1 Getting Acquainted with the Web Interface............................................................39

3.1.1 Computer Requirements..........................................................................................39

3.1.2 Accessing the Web Interface...................................................................................40

3.1.3 Areas of the GUI......................................................................................................41

3.1.4 Toolbar Description..................................................................................................42

3.1.5 Navigation Tree .......................................................................................................43

3.1.5.1 Displaying Navigation Tree in Basic and Full View..................................44

3.1.5.2 Showing / Hiding the Navigation Pane.....................................................45

3.1.6 Working with Configuration Pages ..........................................................................46

3.1.6.1 Accessing Pages......................................................................................46

3.1.6.2 Viewing Parameters.................................................................................46

3.1.6.3 Modifying and Saving Parameters...........................................................48

3.1.6.4 Entering Phone Numbers.........................................................................49

3.1.6.5 Working with Tables.................................................................................50

3.1.7 Searching for Configuration Parameters.................................................................54

3.1.8 Working with Scenarios...........................................................................................55

3.1.8.1 Creating a Scenario..................................................................................55

3.1.8.2 Accessing a Scenario...............................................................................57

3.1.8.3 Editing a Scenario....................................................................................58

3.1.8.4 Saving a Scenario to a PC.......................................................................59

3.1.8.5 Loading a Scenario to the Device............................................................60

3.1.8.6 Deleting a Scenario..................................................................................60

3.1.8.7 Quitting Scenario Mode............................................................................61

3.1.9 Creating a Login Welcome Message.......................................................................62

3.1.10 Getting Help.............................................................................................................63

3.1.11 Logging Off the Web Interface.................................................................................64

3.2 Using the Home Page............................................................................................65

3.2.1 High Availability Status............................................................................................68

3.3 Configuring Web User Accounts............................................................................70

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3.4 Configuring Web Security Settings ........................................................................73

3.5 Web Login Authentication using Smart Cards .......................................................73

3.6 Configuring Web and Telnet Access List...............................................................74

3.7 Configuring RADIUS Settings................................................................................75

4CLI-Based Management....................................................................................77

4.1 Configuring Telnet and SSH Settings ....................................................................78

5SNMP-Based Management...............................................................................79

5.1 Configuring SNMP Community Strings..................................................................79

5.2 Configuring SNMP Trap Destinations....................................................................80

5.3 Configuring SNMP Trusted Managers...................................................................81

5.4 Configuring SNMP V3 Users..................................................................................82

6EMS-Based Management..................................................................................85

7INI File-Based Management..............................................................................87

7.1 INI File Format .......................................................................................................87

7.1.1 Configuring Individual ini File Parameters...............................................................87

7.1.2 Configuring ini File Table Parameters.....................................................................88

7.1.3 General ini File Formatting Rules............................................................................89

7.2 Modifying an ini File ...............................................................................................90

7.3 Secured Encoded ini File.......................................................................................90

Part III: General System Settings ...........................................................................91

8Configuring Certificates ...................................................................................93

8.1 Replacing Device Certificate..................................................................................93

8.2 Loading a Private Key............................................................................................96

8.3 Mutual TLS Authentication.....................................................................................97

8.4Self-Signed Certificates..........................................................................................98

9Date and Time....................................................................................................99

9.1 Manual Date and Time...........................................................................................99

9.1.1 Configuring Date and Time Manually using Web Interface.....................................99

9.2 Automatic Date and Time through SNTP Server.................................................100

9.2.1 Configuring SNTP using Web Interface.................................................................101

Part IV: VoIP Configuration...................................................................................103

10 Network............................................................................................................105

10.1 Ethernet Interface Configuration..........................................................................105

10.2 Ethernet Interface Redundancy ...........................................................................105

10.3 Configuring IP Interface Settings .........................................................................106

10.3.1 Network Configuration...........................................................................................111

10.3.1.1 Multiple Network Interfaces and VLANs................................................ 111

10.3.1.2 Setting Up VoIP Networking.................................................................. 119

10.3.1.3 Getting Started with Mediant 3000 in High Availability Mode............... 123

10.4 Configuring the IP Routing Table.........................................................................130

10.4.1 Routing Table Columns.........................................................................................132

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10.4.1.1 Destination Column............................................................................... 132

10.4.1.2 Prefix Length Column............................................................................ 132

10.4.1.3 Gateway Column................................................................................... 132

10.4.1.4 Interface Column................................................................................... 132

10.4.1.5 Metric Column....................................................................................... 133

10.4.1.6 State Column......................................................................................... 133

10.4.2 Routing Table Configuration Summary and Guidelines........................................133

10.4.3 Troubleshooting the Routing Table .......................................................................134

10.5 Configuring QoS Settings.....................................................................................134

10.6 DNS......................................................................................................................135

10.6.1 Configuring the Internal DNS Table.......................................................................135

10.6.2 Configuring the Internal SRV Table.......................................................................136

10.7 NAT (Network Address Translation) Support.......................................................137

10.7.1 STUN.....................................................................................................................138

10.7.2 First Incoming Packet Mechanism.........................................................................139

10.7.3 No-Op Packets ......................................................................................................139

10.8 Configuring NFS Settings.....................................................................................140

10.9 Robust Receipt of Media Streams .......................................................................142

10.10Multiple Routers Support......................................................................................142

10.11IP Multicasting......................................................................................................142

11 Security............................................................................................................143

11.1 Configuring Firewall Settings ...............................................................................143

11.2 Configuring General Security Settings.................................................................147

11.3 Configuring IP Security Proposal Table...............................................................147

11.4 Configuring IP Security Associations Table.........................................................149

12 Media................................................................................................................153

12.1 Configuring Voice Settings...................................................................................153

12.1.1 Voice Gain (Volume) Control.................................................................................153

12.1.2 Silence Suppression (Compression).....................................................................154

12.1.3 Echo Cancellation..................................................................................................154

12.2 Fax and Modem Capabilities................................................................................156

12.2.1 Fax/Modem Operating Modes...............................................................................157

12.2.2 Fax/Modem Transport Modes ...............................................................................157

12.2.2.1 T.38 Fax Relay Mode............................................................................ 158

12.2.2.2 G.711 Fax / Modem Transport Mode.................................................... 159

12.2.2.3 Fax Fallback.......................................................................................... 159

12.2.2.4 Fax/Modem Bypass Mode .................................................................... 159

12.2.2.5 Fax / Modem NSE Mode....................................................................... 160

12.2.2.6 Fax / Modem Transparent with Events Mode ....................................... 161

12.2.2.7 Fax / Modem Transparent Mode........................................................... 161

12.2.2.8 RFC 2833 ANS Report upon Fax/Modem Detection............................ 162

12.2.3 V.34 Fax Support...................................................................................................162

12.2.3.1 Bypass Mechanism for V.34 Fax Transmission.................................... 163

12.2.3.2 Relay Mode for T.30 and V.34 Faxes ................................................... 163

12.2.3.3 V.34 Fax Relay for SG3 Fax Machines................................................. 164

12.2.4 V.150.1 Modem Relay...........................................................................................166

12.2.5 V.152 Support........................................................................................................167

12.2.6 Fax Transmission behind NAT..............................................................................167

12.3 Configuring RTP/RTCP Settings..........................................................................168

12.3.1 Dynamic Jitter Buffer Operation ............................................................................169

12.3.2 Comfort Noise Generation.....................................................................................170

12.3.3 Dual-Tone Multi-Frequency Signaling...................................................................170

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12.3.3.1 Configuring DTMF Transport Types...................................................... 170

12.3.3.2 Configuring RFC 2833 Payload ............................................................ 172

12.3.4 Configuring RTP Base UDP Port...........................................................................173

12.3.5 RTP Control Protocol Extended Reports (RTCP XR) ...........................................173

12.3.5.1 Configuring RTCP XR using Web Interface.......................................... 174

12.4 Configuring IP Media Settings..............................................................................175

12.4.1 Answer Machine Detector (AMD)..........................................................................176

12.4.2 Automatic Gain Control (AGC)..............................................................................180

12.5 Configuring General Media Settings....................................................................181

12.6 Configuring DSP Templates.................................................................................181

12.7 Configuring Media Realms...................................................................................182

12.8 Configuring Media Security..................................................................................185

12.9 Configuring Quality of Experience Parameters per Media Realm........................186

12.10Configuring Server for Media Quality of Experience............................................189

13 Services ...........................................................................................................191

13.1 Routing Based on LDAP Active Directory Queries ..............................................191

13.1.1 LDAP Overview .....................................................................................................191

13.1.2 Configuring LDAP Settings....................................................................................192

13.1.3 AD-Based Tel-to-IP Routing in Microsoft OCS 2007 Environment.......................192

13.2 Least Cost Routing...............................................................................................195

13.2.1 Overview................................................................................................................195

13.2.2 Configuring LCR....................................................................................................198

13.2.2.1 Enabling the LCR Feature..................................................................... 198

13.2.2.2 Configuring Cost Groups....................................................................... 199

13.2.2.3 Configuring Time Bands for Cost Groups............................................. 200

13.2.2.4 Assigning Cost Groups to Routing Rules.............................................. 202

14 Control Network ..............................................................................................203

14.1 Configuring SRD Table........................................................................................203

14.2 Configuring SIP Interface Table...........................................................................206

14.3 Configuring IP Groups..........................................................................................208

14.4 Configuring Proxy Sets Table ..............................................................................215

14.5 Configuring NAT Translation per IP Interface......................................................220

14.6 Multiple SIP Signaling and Media Interfaces using SRDs....................................221

15 Enabling Applications.....................................................................................229

16 Coders and Profiles ........................................................................................231

16.1 Configuring Coders..............................................................................................231

16.2 Configuring Coder Groups...................................................................................232

16.3 Configuring Tel Profile..........................................................................................233

16.4 Configuring IP Profiles .........................................................................................236

17 SIP Definitions.................................................................................................239

17.1 Configuring SIP General Parameters...................................................................239

17.2 Configuring Advanced Parameters......................................................................240

17.3 Configuring Account Table...................................................................................241

17.4 Configuring Proxy and Registration Parameters..................................................244

18 GW and IP to IP ...............................................................................................245

18.1 Digital PSTN.........................................................................................................245

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18.1.1 TDM and Timing....................................................................................................245

18.1.1.1 Configuring TDM Bus Settings.............................................................. 245

18.1.1.2 Configuring Digital PCM Settings.......................................................... 246

18.1.1.3 Configuring System Timing................................................................... 246

18.1.2 Configuring Transmission Settings........................................................................250

18.1.3 Configuring CAS State Machines..........................................................................251

18.1.4 Configuring Trunk Settings....................................................................................253

18.1.5 Configuring Digital Gateway Parameters ..............................................................256

18.1.6 Tunneling Applications...........................................................................................257

18.1.6.1 TDM Tunneling...................................................................................... 257

18.1.6.2 QSIG Tunneling..................................................................................... 260

18.1.7 Advanced PSTN Configuration..............................................................................261

18.1.7.1 Release Reason Mapping..................................................................... 261

18.1.7.2 ISDN Overlap Dialing............................................................................ 265

18.1.7.3 ISDN Non-Facility Associated Signaling (NFAS).................................. 267

18.1.7.4 SDH / SONET Configuration................................................................. 270

18.1.7.5 Redirect Number and Calling Name (Display)...................................... 276

18.2 Trunk Group.........................................................................................................277

18.2.1 Configuring Trunk Group Table.............................................................................277

18.2.2 Configuring Trunk Group Settings.........................................................................279

18.3 Manipulation.........................................................................................................282

18.3.1 Configuring General Settings ................................................................................282

18.3.2 Configuring Number Manipulation Tables.............................................................282

18.3.3 Configuring Redirect Number IP to Tel..................................................................287

18.3.4 Configuring Redirect Number Tel to IP..................................................................289

18.3.5 Mapping NPI/TON to SIP Phone-Context .............................................................291

18.3.6 Numbering Plans and Type of Number.................................................................293

18.3.7 Configuring Release Cause Mapping....................................................................294

18.3.8 SIP Calling Name Manipulations...........................................................................295

18.3.9 SIP Message Manipulation....................................................................................295

18.3.10Manipulating Number Prefix ..................................................................................296

18.4 Routing.................................................................................................................297

18.4.1 Configuring General Routing Parameters.............................................................297

18.4.2 Configuring Outbound IP Routing Table................................................................298

18.4.3 Configuring Inbound IP Routing Table ..................................................................306

18.4.4 Configuring Alternative Routing Reasons..............................................................308

18.4.5 Configuring Call Forward upon Busy Trunk...........................................................310

18.5 DTMF and Supplementary...................................................................................311

18.5.1 Configuring DTMF and Dialing..............................................................................311

18.5.2 Configuring Supplementary Services....................................................................311

18.5.2.1 Call Hold and Retrieve .......................................................................... 313

18.5.2.2 Call Transfer.......................................................................................... 313

18.5.2.3 Call Forward.......................................................................................... 314

18.5.2.4 Message Waiting Indication.................................................................. 315

18.5.2.5 Emergency E911 Phone Number Services........................................... 316

18.5.2.6 Multilevel Precedence and Preemption................................................. 316

18.5.2.7 Denial of Collect Calls........................................................................... 318

18.5.3 Configuring Voice Mail Parameters.......................................................................319

18.5.4 Advice of Charge Services for Euro ISDN.............................................................320

18.6 Dialing Plan Features...........................................................................................321

18.6.1 Digit Mapping.........................................................................................................321

18.6.2 External Dial Plan File ...........................................................................................322

18.6.2.1 Modifying ISDN-to-IP Calling Party Number......................................... 324

18.6.3 Dial Plan Prefix Tags for IP-to-Tel Routing............................................................325

18.7 Configuring Alternative Routing (Based on Connectivity and QoS).....................326

18.7.1 Alternative Routing Mechanism.............................................................................327

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18.7.2 Determining the Availability of Destination IP Addresses......................................327

18.7.3 PSTN Fallback.......................................................................................................327

18.8 SIP Call Routing Examples..................................................................................328

18.8.1 SIP Call Flow Example..........................................................................................328

18.8.2 SIP Message Authentication Example ..................................................................330

18.8.3 Trunk-to-Trunk Routing Example ..........................................................................333

18.8.4 SIP Trunking between Enterprise and ITSPs........................................................334

18.9 IP-to-IP Routing Application.................................................................................338

18.9.1 Theory of Operation...............................................................................................339

18.9.1.1 Proxy Sets............................................................................................. 340

18.9.1.2 IP Groups.............................................................................................. 340

18.9.1.3 Inbound and Outbound IP Routing Rules............................................. 342

18.9.1.4 Accounts................................................................................................ 342

18.9.2 IP-to-IP Routing Configuration Example................................................................342

18.9.2.1 Step 1: Enable the IP-to-IP Capabilities................................................ 345

18.9.2.2 Step 2: Configure the Number of Media Channels............................... 345

18.9.2.3 Step 3: Define a Trunk Group for the Local PSTN................................ 346

18.9.2.4 Step 4: Configure the Proxy Sets.......................................................... 346

18.9.2.5 Step 5: Configure the IP Groups........................................................... 348

18.9.2.6 Step 6: Configure the Account Table.................................................... 351

18.9.2.7 Step 7: Configure IP Profiles for Voice Coders..................................... 352

18.9.2.8 Step 8: Configure Inbound IP Routing .................................................. 354

18.9.2.9 Step 9: Configure Outbound IP Routing................................................ 355

18.9.2.10Step 10: Configure Destination Phone Number Manipulation.............. 357

19 Session Border Controller..............................................................................359

19.1 SBC Overview......................................................................................................359

19.1.1 SIP Network Definitions.........................................................................................360

19.1.2 SIP Dialog Initiation Process.................................................................................360

19.1.2.1 Determining Source and Destination URL............................................ 362

19.1.2.2 Source IP Group Classification............................................................. 362

19.1.2.3 SBC IP-to-IP Routing ............................................................................ 363

19.1.2.4 IP-to-IP Inbound and Outbound Manipulation....................................... 364

19.1.2.5 SIP Header Manipulation...................................................................... 366

19.1.3 User Registration and Internal Database ..............................................................367

19.1.3.1 Initial Registration Request Processing ................................................ 367

19.1.3.2 Internal Database.................................................................................. 368

19.1.3.3 Routing using Internal Database........................................................... 369

19.1.3.4 Registration Refreshes.......................................................................... 369

19.1.3.5 Registration Restriction Control ............................................................ 370

19.1.4 SBC Media Handling .............................................................................................370

19.1.4.1 Media Anchoring without Transcoding (Transparent)........................... 372

19.1.4.2 Media Anchoring with Transcoding....................................................... 372

19.1.4.3 No Media Anchoring.............................................................................. 374

19.1.4.4 Interworking DTMF Methods................................................................. 375

19.1.4.5 Transcoding Modes............................................................................... 376

19.1.4.6 Restricting Coders................................................................................. 376

19.1.4.7 SRTP-RTP Transcoding........................................................................ 378

19.1.4.8 Multiple RTP Media Streams per Call Session..................................... 379

19.1.5 Fax Negotiation and Transcoding..........................................................................379

19.1.6 SIP Dialog Admission Control ...............................................................................380

19.1.7 Limiting SBC Call Duration....................................................................................380

19.1.8 SIP Authentication Server for SBC Users .............................................................380

19.1.9 Handling SIP 3xx Redirect Responses..................................................................381

19.1.10Interworking SIP Diversion and History-Info Headers...........................................382

19.1.11Call Survivability ....................................................................................................383

19.1.11.1Auto-Provisioning of Subscriber-Specific Information for BroadWorks

Server for Survivability.......................................................................................... 383

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19.1.11.2BroadSoft's Shared Phone Line Call Appearance for SBC Survivability

384

19.1.11.3Call Survivability for Call Centers.......................................................... 386

19.1.12Call Forking............................................................................................................389

19.1.12.1Initiating SIP Call Forking...................................................................... 389

19.1.12.2SIP Forking Initiated by SIP Proxy Server ............................................ 389

19.1.13Alternative Routing on Detection of Failed SIP Response....................................389

19.1.14Active SBC Call Continuity during HA Blade Switchover......................................390

19.2 SBC Configuration ...............................................................................................390

19.2.1 Configuring General Settings ................................................................................390

19.2.2 Configuring Admission Control..............................................................................391

19.2.3 Configuring Allowed Coder Groups.......................................................................393

19.2.4 Configuring SIP Message Policy Rules.................................................................394

19.2.5 Routing SBC..........................................................................................................397

19.2.5.1 Configuring Classification Rules ........................................................... 397

19.2.5.2 Configuring Condition Rules ................................................................. 401

19.2.5.3 Configuring SBC IP-to-IP Routing......................................................... 402

19.2.5.4 Configuring Alternative Routing Reasons............................................. 407

19.2.6 Manipulations SBC................................................................................................408

19.2.6.1 Configuring Message Manipulations..................................................... 408

19.2.6.2 Configuring IP-to-IP Inbound Manipulations......................................... 411

19.2.6.3 Configuring IP-to-IP Outbound Manipulations ...................................... 414

19.3 SBC Configuration Examples...............................................................................417

19.3.1 Basic SBC Scenario ..............................................................................................417

19.3.1.1 Step 1: Enable the SBC Application...................................................... 418

19.3.1.2 Step 2: Define Number of Media Channels........................................... 418

19.3.1.3 Step 3: Define IP Addresses for Media/Control.................................... 419

19.3.1.4 Step 4: Configure Multiple SIP and RTP Interfaces.............................. 419

19.3.1.5 Step 5: Define Proxy Sets per Network................................................. 422

19.3.1.6 Step 6: Define IP Groups per Network.................................................. 423

19.3.1.7 Step 7: Define IP-to-IP Routing Rules................................................... 425

19.3.2 SBC-to-PSTN Routing...........................................................................................426

19.3.2.1 Step 1: Define SIP Interface for PSTN.................................................. 427

19.3.2.2 Step 2: Define Device as Proxy ............................................................ 427

19.3.2.3 Step 3: Define IP Group for PSTN........................................................ 428

19.3.2.4 Step 4: Define IP-to-IP Routing Rules for PSTN................................... 429

19.3.2.5 Step 5: Define Trunk Group for PSTN .................................................. 431

19.3.2.6 Step 6: Define IP-to-Tel Routing Rules................................................. 432

19.3.3 SBC Vocoder Transcoding....................................................................................432

19.3.3.1 Step 1: Define Coder Groups................................................................ 433

19.3.3.2 Step 2: Define Allowed Coders............................................................. 433

19.3.3.3 Step 3: Assign Coder Rules to IP Profiles............................................. 433

19.3.3.4 Step 4: Assign IP Profiles to IP Groups ................................................ 435

19.3.4 SBC RTP-SRTP Transcoding ...............................................................................436

19.3.5 SBC SIP URI Manipulation....................................................................................438

19.3.5.1 Step 1: Define SIP URI Host Manipulation............................................ 438

19.3.5.2 Step 2: Define SIP URI User Manipulation........................................... 439

19.3.6 SIP Header Manipulation.......................................................................................440

19.3.6.1 Step 1: Add SIP Message Manipulation Rule....................................... 440

19.3.6.2 Step 2: Assign Message Manipulation Rule to IP Group...................... 441

20 Stand-Alone Survivability (SAS) Application................................................443

20.1 Overview..............................................................................................................443

20.1.1 SAS Operating Modes...........................................................................................443

20.1.1.1 SAS Outbound Mode ............................................................................ 444

20.1.1.2 SAS Redundant Mode........................................................................... 445

20.1.2 SAS Routing..........................................................................................................447

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20.1.2.1 SAS Routing in Normal State................................................................ 447

20.1.2.2 SAS Routing in Emergency State......................................................... 449

20.2 SAS Configuration................................................................................................449

20.2.1 General SAS Configuration...................................................................................450

20.2.1.1 Enabling the SAS Application ............................................................... 450

20.2.1.2 Configuring Common SAS Parameters ................................................ 450

20.2.2 Configuring SAS Outbound Mode.........................................................................453

20.2.3 Configuring SAS Redundant Mode .......................................................................453

20.2.4 Configuring Gateway Application with SAS...........................................................454

20.2.4.1 Gateway with SAS Outbound Mode...................................................... 454

20.2.4.2 Gateway with SAS Redundant Mode.................................................... 456

20.2.5 Advanced SAS Configuration................................................................................458

20.2.5.1 Manipulating URI user part of Incoming REGISTER............................ 458

20.2.5.2 Manipulating Destination Number of Incoming INVITE......................... 459

20.2.5.3 SAS Routing Based on SAS Routing Table.......................................... 461

20.2.5.4 Blocking Calls from Unregistered SAS Users....................................... 464

20.2.5.5 Configuring SAS Emergency Calls ....................................................... 464

20.2.5.6 Adding SIP Record-Route Header to SIP INVITE ................................ 466

20.2.5.7 Replacing Contact Header for SIP Messages ...................................... 467

20.3 Viewing Registered SAS Users............................................................................468

20.4 SAS Cascading....................................................................................................468

21 Transcoding using Third-Party Call Control.................................................471

21.1 Using RFC 4117...................................................................................................471

21.2 Using RFC 4240 - NetAnn 2-Party Conferencing ................................................472

Part V: Maintenance ..............................................................................................473

22 Basic Maintenance..........................................................................................475

22.1 Resetting the Device............................................................................................475

22.2 Locking and Unlocking the Device.......................................................................477

22.3 Saving Configuration............................................................................................478

23 High Availability Maintenance........................................................................479

24 Software Upgrade............................................................................................481

24.1 Loading Auxiliary Files.........................................................................................481

24.1.1 Call Progress Tones File .......................................................................................484

24.1.2 Prerecorded Tones File.........................................................................................486

24.1.3 CAS Files...............................................................................................................487

24.1.4 Dial Plan File..........................................................................................................487

24.1.5 User Information File .............................................................................................489

24.1.5.1 User Information File for PBX Extensions and "Global" Numbers........ 489

24.1.5.2 User Information File for SBC Users Database.................................... 490

24.1.6 AMD Sensitivity File...............................................................................................491

24.2 Loading Software Upgrade Key...........................................................................493

24.2.1 Loading via BootP/TFTP........................................................................................495

24.3 Software Upgrade Wizard....................................................................................496

24.3.1 Hitless Software Upgrade......................................................................................500

24.4 Backing Up and Loading Configuration File.........................................................502

25 Restoring Factory Defaults ............................................................................503

25.1 Restoring Defaults using CLI ...............................................................................503

25.2 Restoring Defaults using an ini File......................................................................504

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