23.6.4 Performing Manual D-Channel Switchover in NFAS Group ..................................292
23.7 ISDN Overlap Dialing ........................................................................................... 292
23.7.1 Collecting ISDN Digits and Sending Complete Number in SIP .............................292
23.7.2 Interworking ISDN Overlap Dialing with SIP According to RFC 3578 ...................293
23.8 Redirect Number and Calling Name (Display) ..................................................... 294
24 Trunk Group .................................................................................................... 295
24.1 Configuring Trunk Group Table ............................................................................ 295
24.2 Configuring Hunt Group Settings ......................................................................... 297
25 Manipulation .................................................................................................... 303
25.1 Configuring General Settings ............................................................................... 303
25.2 Configuring Source/Destination Number Manipulation Rules .............................. 303
25.3 Manipulating Number Prefix ................................................................................. 309
25.4 SIP Calling Name Manipulations .......................................................................... 310
25.5 Configuring Redirect Number IP to Tel ................................................................ 313
25.6 Manipulating Redirected and Diverted Numbers for Call Diversion ..................... 316
25.7 Mapping NPI/TON to SIP Phone-Context ............................................................ 317
25.8 Configuring Release Cause Mapping .................................................................. 319
25.8.1 Fixed Mapping of SIP Response to ISDN Release Reason ..................................320
25.8.2 Fixed Mapping of ISDN Release Reason to SIP Response ..................................322
25.8.3 Reason Header ......................................................................................................324
25.8.4 Mapping PSTN Release Cause to SIP Response ................................................324
25.9 Numbering Plans and Type of Number ................................................................ 325
26 Routing ............................................................................................................. 327
26.1 Configuring General Routing Parameters ............................................................ 327
26.2 Configuring Outbound IP Routing Table .............................................................. 327
26.3 Configuring Inbound IP Routing Table ................................................................. 336
26.4 IP Destinations Connectivity Feature ................................................................... 340
26.5 Alternative Routing for Tel-to-IP Calls .................................................................. 341
26.5.1 Alternative Routing Based on IP Connectivity .......................................................341
26.5.2 Alternative Routing Based on SIP Responses ......................................................342
26.5.3 PSTN Fallback .......................................................................................................344
26.6 Alternative Routing for IP-to-Tel Calls .................................................................. 345
26.6.1 Alternative Routing to Trunk upon Q.931 Call Release Cause Code ...................345
26.6.2 Alternative Routing to an IP Destination upon a Busy Trunk ................................346
27 Configuring DTMF and Dialing ....................................................................... 349
27.1 Dialing Plan Features ........................................................................................... 350
27.1.1 Digit Mapping .........................................................................................................350
27.1.2 External Dial Plan File ...........................................................................................351
28 Configuring Supplementary Services ........................................................... 353
28.1 Call Hold and Retrieve ......................................................................................... 355
28.2 Call Pickup ........................................................................................................... 357
28.3 BRI Suspend and Resume ................................................................................... 357
28.4 Consultation Feature ............................................................................................ 358
28.5 Call Transfer ......................................................................................................... 358
28.5.1 Consultation Call Transfer .....................................................................................358
28.5.2 Consultation Transfer for QSIG Path Replacement ..............................................359
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