AudioCodes Mediant 3000 User Manual page 9

User's Manual
24.6 Alternative Routing for IP-to-Tel Calls .................................................................. 372
24.6.1 Alternative Routing to Trunk upon Q.931 Call Release Cause Code ...................372
24.6.2 Alternative Routing to an IP Destination upon a Busy Trunk ................................373
25 Configuring DTMF and Dialing ....................................................................... 375
25.1 Dialing Plan Features ........................................................................................... 375
25.1.1 Digit Mapping .........................................................................................................375
25.1.2 External Dial Plan File ...........................................................................................376
26 Configuring Supplementary Services ........................................................... 377
26.1 Call Hold and Retrieve ......................................................................................... 378
26.2 Call Transfer ......................................................................................................... 378
26.2.1 Consultation Call Transfer .....................................................................................378
26.2.2 Consultation Transfer for QSIG Path Replacement ..............................................379
26.2.3 Blind Call Transfer .................................................................................................379
26.3 Call Forward ......................................................................................................... 380
26.4 Message Waiting Indication ................................................................................. 380
26.5 Emergency E911 Phone Number Services .......................................................... 381
26.5.1 Pre-empting Existing Calls for E911 IP-to-Tel Calls ..............................................381
26.5.2 Enhanced 9-1-1 Support for Lync Server 2010 .....................................................382
26.5.2.1 About E9-1-1 Services .......................................................................... 382
26.5.2.2 Microsoft Lync Server 2010 and E9-1-1 ................................................ 383
26.5.2.3 AudioCodes ELIN Gateway for Lync Server 2010 E9-1-1 Calls to PSTN
26.5.2.4 Configuring AudioCodes ELIN Gateway ............................................... 392
26.6 Multilevel Precedence and Preemption ................................................................ 393
26.6.1 MLPP Preemption Events in SIP Reason Header ................................................396
26.6.2 Precedence Ring Tone ..........................................................................................397
26.7 Advice of Charge Services for Euro ISDN ........................................................... 397
26.8 Configuring Voice Mail ......................................................................................... 398
Session Border Controller Application................................................................399
27 Introduction ..................................................................................................... 401
28 SBC Overview .................................................................................................. 403
28.1 SIP Network Definitions ....................................................................................... 404
28.2 SIP Dialog Initiation Process ................................................................................ 404
28.3 User Registration and Internal Database ............................................................. 406
28.3.1 Initial Registration Request Processing .................................................................407
28.3.2 Internal Database ..................................................................................................407
28.3.3 Routing using Internal Database ...........................................................................408
28.3.4 Registration Refreshes ..........................................................................................408
28.3.5 Notification of Expired User Registration to SIP Proxy / Registrar ........................408
28.3.6 Registration Restriction Control .............................................................................409
28.4 SBC Media Handling ............................................................................................ 409
28.4.1 Media Anchoring without Transcoding (Transparent) ...........................................411
28.4.2 Media Anchoring with Transcoding .......................................................................411
28.4.3 No Media Anchoring ..............................................................................................413
28.4.4 Transcoding Modes ...............................................................................................415
28.4.5 Restricting Coders .................................................................................................415
28.4.6 Coder Transcoding ................................................................................................416
Version 6.6
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Contents
Mediant 3000