Version 5.2 7 September 2007
SIP User's Manual Contents
6.5.12
Number Manipulation and Routing Parameters ................................................... 318
6.5.13 Channel Parameters............................................................................................. 332
6.5.14 Configuration Files Parameters ............................................................................ 337
7 Telephony Capabilities ...................................................................................339
7.1 Configuring the DTMF Transport Types...............................................................339
7.2 Fax and Modem Capabilities................................................................................ 340
7.2.1 Fax/Modem Operating Modes .............................................................................. 340
7.2.2 Fax/Modem Transport Modes .............................................................................. 341
7.2.2.1 T.38 Fax Relay Mode ............................................................................ 341
7.2.2.2 Fax/Modem Bypass Mode .................................................................... 342
7.2.2.3 Fax / Modem NSE Mode....................................................................... 343
7.2.2.4 G.711 Fax / Modem Transport Mode .................................................... 344
7.2.2.5 Fax Fallback .......................................................................................... 344
7.2.2.6 Fax / Modem Transparent Mode........................................................... 345
7.2.2.7 Fax / Modem Transparent with Events Mode ....................................... 345
7.2.3 Supporting V.34 Faxes ......................................................................................... 346
7.2.3.1 Using Bypass Mechanism for V.34 Fax Transmission.......................... 346
7.2.3.2 Using Relay mode for both T.30 and V.34 faxes .................................. 346
7.2.4 Supporting V.152 Implementation ........................................................................ 347
7.3 Event Notification using X-Detect Header............................................................348
7.4 RTP Multiplexing (ThroughPacket) ......................................................................349
7.5 Dynamic Jitter Buffer Operation ........................................................................... 350
7.6 Configuring Alternative Routing (Based on Connectivity and QoS) .....................351
7.6.1 Alternative Routing Mechanism............................................................................ 351
7.6.2 Determining the Availability of Destination IP Addresses..................................... 351
7.6.3 PSTN Fallback as a Special Case of Alternative Routing.................................... 352
7.6.4 Relevant Parameters ............................................................................................ 352
7.7 Call Detail Record ................................................................................................352
7.8 Supported RADIUS Attributes..............................................................................354
7.8.1 RADIUS Server Messages ................................................................................... 356
7.9 Trunk-to-Trunk Routing Example ......................................................................... 356
7.10 Proxy or Registrar Registration Example .............................................................357
7.11 Configuration Examples ....................................................................................... 358
7.11.1 SIP Call Flow ........................................................................................................ 358
7.11.2 SIP Authentication Example ................................................................................. 361
7.12 Working with Supplementary Services.................................................................363
7.12.1 Call Hold and Retrieve.......................................................................................... 363
7.12.2 Call Transfer ......................................................................................................... 364
8 Networking Capabilities..................................................................................365
8.1 Ethernet Interface Configuration ..........................................................................365
8.2 Ethernet Interface Redundancy ...........................................................................365
8.3 NAT (Network Address Translation) Support.......................................................366
8.3.1 STUN .................................................................................................................... 367
8.3.2 First Incoming Packet Mechanism........................................................................ 368
8.3.3 No-Op Packets ..................................................................................................... 368
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