AudioCodes Mediant 3000 User Manual page 10

28.3.1 Initial Registration Request Processing .................................................................489
28.3.2 SBC Users Registration Database ........................................................................490
28.3.3 Routing using Users Registration Database..........................................................490
28.3.4 Registration Refreshes ..........................................................................................490
28.3.5 Registration Restriction Control .............................................................................491
28.4 SBC Media Handling ............................................................................................ 492
28.4.1 Media Anchoring without Transcoding (Transparent) ...........................................493
28.4.2 Media Anchoring with Transcoding .......................................................................494
28.4.3 No Media Anchoring ..............................................................................................495
28.4.4 Transcoding Modes ...............................................................................................497
28.4.5 Restricting Coders .................................................................................................498
28.4.6 Coder Transcoding ................................................................................................498
28.4.7 Prioritizing Coder List in SDP Offer .......................................................................500
28.4.8 SRTP-RTP and SRTP-SRTP Transcoding ...........................................................500
28.4.9 Multiple RTP Media Streams per Call Session .....................................................501
28.4.10 Interworking DTMF Methods .................................................................................501
28.5 Fax Negotiation and Transcoding ........................................................................ 502
28.6 Limiting SBC Call Duration ................................................................................... 502
28.7 SBC Authentication .............................................................................................. 502
28.7.1 SIP Authentication Server Functionality ................................................................503
28.7.2 User Authentication based on RADIUS .................................................................504
28.8 Interworking SIP Signaling ................................................................................... 504
28.8.1 Interworking SIP 3xx Redirect Responses ............................................................504
28.8.1.1 Resultant INVITE Traversing Device .................................................... 504
28.8.1.2 Local Handling of SIP 3xx ..................................................................... 506
28.8.2 Interworking SIP Diversion and History-Info Headers ...........................................506
28.8.3 Interworking SIP REFER Messages ......................................................................507
28.8.4 Interworking SIP PRACK Messages .....................................................................508
28.8.5 Interworking SIP Session Timer ............................................................................508
28.8.6 Interworking SIP Early Media ................................................................................508
28.8.7 Interworking SIP re-INVITE Messages ..................................................................511
28.8.8 Interworking SIP UPDATE Messages ...................................................................511
28.8.9 Interworking SIP re-INVITE to UPDATE ................................................................511
28.8.10 Interworking Delayed Offer ....................................................................................511
28.8.11 Interworking Call Hold ............................................................................................512
28.9 Call Survivability ................................................................................................... 512
28.9.1 Auto-Provisioning of Subscriber-Specific Information for BroadWorks Server for
Survivability.........................................................................................................................512
28.9.2 BroadSoft's Shared Phone Line Call Appearance for SBC Survivability...............513
28.9.3 Call Survivability for Call Centers ..........................................................................514
28.9.4 Survivability Mode Display on Aastra IP Phones ..................................................517
28.10 Call Forking .......................................................................................................... 517
28.10.1 Initiating SIP Call Forking ......................................................................................517
28.10.2 SIP Forking Initiated by SIP Proxy Server .............................................................518
28.10.3 Call Forking-based IP-to-IP Routing Rules ............................................................518
28.11 Alternative Routing on Detection of Failed SIP Response ................................... 519
28.12 Active SBC Call Continuity during HA Blade Switchover ..................................... 519
29 SBC Configuration .......................................................................................... 521
29.1 Configuring General Settings ............................................................................... 521
29.1.1 Interworking Dialog Information in SIP NOTIFY Messages ..................................521
29.2 Configuring Admission Control ............................................................................. 523
29.3 Configuring Allowed Audio Coder Groups ........................................................... 527
29.4 Configuring Allowed Video Coder Groups ........................................................... 528
29.5 Routing SBC ........................................................................................................ 529
User's Manual 10
Mediant 3000
Document #: LTRT-89738