21 Manipulation .................................................................................................... 209
21.1 Configuring General Settings ............................................................................... 209
21.2 Configuring Source/Destination Number Manipulation Rules .............................. 209
21.3 Manipulating Number Prefix ................................................................................. 214
21.4 SIP Calling Name Manipulations .......................................................................... 215
21.5 Configuring Redirect Number IP to Tel ................................................................ 218
21.6 Mapping NPI/TON to SIP Phone-Context ............................................................ 220
22 Routing ............................................................................................................. 223
22.1 Configuring General Routing Parameters ............................................................ 223
22.2 Configuring Tel to IP Routing ............................................................................... 223
22.3 Configuring IP to Hunt Group Routing Table ....................................................... 230
22.4 IP Destinations Connectivity Feature ................................................................... 232
22.5 Alternative Routing for Tel-to-IP Calls .................................................................. 234
22.5.1 Alternative Routing Based on IP Connectivity .......................................................234
22.5.2 Alternative Routing Based on SIP Responses ......................................................235
22.6 Alternative Routing for IP-to-Tel Calls .................................................................. 237
22.6.1 Alternative Routing to Trunk upon Q.931 Call Release Cause Code ...................237
22.6.2 Alternative Routing to an IP Destination upon a Busy Trunk ................................238
23 Configuring DTMF and Dialing ....................................................................... 241
23.1 Dialing Plan Features ........................................................................................... 241
23.1.1 Digit Mapping .........................................................................................................241
23.1.2 External Dial Plan File ...........................................................................................242
24 Configuring Supplementary Services ........................................................... 243
24.1 Call Hold and Retrieve ......................................................................................... 245
24.2 Call Pickup ........................................................................................................... 247
24.3 Consultation Feature ............................................................................................ 247
24.4 Call Transfer ......................................................................................................... 248
24.4.1 Consultation Call Transfer .....................................................................................248
24.4.2 Blind Call Transfer .................................................................................................248
24.5 Call Forward ......................................................................................................... 248
24.5.1 Call Forward Reminder Ring .................................................................................249
24.5.2 Call Forward Reminder (Off-Hook) Special Dial Tone ..........................................250
24.5.3 Call Forward Reminder Dial Tone (Off-Hook) upon Spanish SIP Alert-Info ..........250
24.6 Call Waiting .......................................................................................................... 251
24.7 Message Waiting Indication ................................................................................. 251
24.8 Caller ID ............................................................................................................... 252
24.8.1 Caller ID Detection / Generation on the Tel Side ..................................................252
24.8.2 Debugging a Caller ID Detection on FXO ..............................................................253
24.8.3 Caller ID on the IP Side .........................................................................................253
24.9 Three-Way Conferencing ..................................................................................... 254
24.10 Emergency E911 Phone Number Services .......................................................... 256
24.10.1 Pre-empting Existing Calls for E911 IP-to-Tel Calls ..............................................256
24.11 Multilevel Precedence and Preemption ................................................................ 256
24.11.1 MLPP Preemption Events in SIP Reason Header ................................................257
24.11.2 Precedence Ring Tone ..........................................................................................258
24.12 Denial of Collect Calls .......................................................................................... 259