28.5.3 Blind Call Transfer .................................................................................................359
28.6 Call Forward ......................................................................................................... 360
28.6.1 Call Forward Reminder Ring .................................................................................361
28.6.2 Call Forward Reminder (Off-Hook) Special Dial Tone ..........................................361
28.6.3 Call Forward Reminder Dial Tone (Off-Hook) upon Spanish SIP Alert-Info ..........362
28.6.4 BRI Call Forwarding ...............................................................................................363
28.7 Call Waiting .......................................................................................................... 363
28.8 Message Waiting Indication ................................................................................. 364
28.9 Caller ID ............................................................................................................... 366
28.9.1 Caller ID Detection / Generation on the Tel Side ..................................................366
28.9.2 Debugging a Caller ID Detection on FXO ..............................................................366
28.9.3 Caller ID on the IP Side .........................................................................................367
28.10 Three-Way Conferencing ..................................................................................... 368
28.11 Emergency E911 Phone Number Services .......................................................... 369
28.11.1 FXS Device Emulating PSAP using DID Loop-Start Lines ....................................370
28.11.2 FXO Device Interworking SIP E911 Calls from Service Provider's IP Network to
PSAP DID Lines .................................................................................................................372
28.11.3 Pre-empting Existing Calls for E911 IP-to-Tel Calls ..............................................375
28.11.4 Enhanced 9-1-1 Support for Lync Server 2010 .....................................................376
28.11.4.1 About E9-1-1 Services .......................................................................... 376
28.11.4.2 Microsoft Lync Server 2010 and E9-1-1 ................................................ 377
28.11.4.3 AudioCodes ELIN Gateway for Lync Server 2010 E9-1-1 Calls to PSTN
381
28.11.4.4 Configuring AudioCodes ELIN Gateway ............................................... 386
28.12 Multilevel Precedence and Preemption ................................................................ 388
28.12.1 MLPP Preemption Events in SIP Reason Header ................................................390
28.12.2 Precedence Ring Tone ..........................................................................................391
28.13 Denial of Collect Calls .......................................................................................... 391
28.14 Configuring ISDN Supplementary Services ......................................................... 392
28.15 Advice of Charge Services for Euro ISDN ........................................................... 394
28.16 Configuring Voice Mail ......................................................................................... 395
29 Analog Gateway .............................................................................................. 397
29.1 Configuring Keypad Features .............................................................................. 397
29.2 Configuring Metering Tones ................................................................................. 398
29.3 Configuring Charge Codes ................................................................................... 399
29.4 Configuring FXO Settings .................................................................................... 400
29.5 Configuring Authentication ................................................................................... 401
29.6 Configuring Automatic Dialing .............................................................................. 402
29.7 Configuring Caller Display Information ................................................................. 404
29.8 Configuring Call Forward ..................................................................................... 405
29.9 Configuring Caller ID Permissions ....................................................................... 407
29.10 Configuring Call Waiting ....................................................................................... 408
29.11 Rejecting Anonymous Calls ................................................................................. 409
29.12 Configuring FXS Distinctive Ringing and Call Waiting Tones per
Source/Destination Number .......................................................................................... 409
29.13 FXS/FXO Coefficient Types ................................................................................. 411
29.14 FXO Operating Modes ......................................................................................... 411
29.14.1 FXO Operations for IP-to-Tel Calls ........................................................................412
29.14.1.1 One-Stage Dialing ................................................................................. 412
29.14.1.2 Two-Stage Dialing ................................................................................. 413
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