xiii
Configuring VT1 line ··········································································································································· 347
Configuring BSV line ··········································································································································· 349
Displaying ISDN link state ·································································································································· 354
E1 voice DSS1 signaling configuration example ····································································································· 354
Managing lines ······················································································································································· 357
FXS voice subscriber line ············································································································································· 357
FXO voice subscriber line ··········································································································································· 357
E&M subscriber line ····················································································································································· 357
E&M introduction ················································································································································· 357
E&M start mode ··················································································································································· 357
One-to-one binding between FXS and FXO voice subscriber lines ········································································ 359
Echo adjustment function ············································································································································· 359
Adjusting echo duration ····································································································································· 359
Adjusting echo cancellation parameters ··········································································································· 359
Enabling the nonlinear function of echo cancellation ····················································································· 360
Line management configuration ································································································································· 360
Configuring an FXS voice subscriber line ········································································································· 360
Configuring an FXO voice subscriber line ········································································································ 363
Configuring an E&M subscriber line ················································································································· 366
Configuring an ISDN line ··································································································································· 369
Configuring a paging line ·································································································································· 371
Configuring an MoH line ··································································································································· 372
Line management configuration examples ················································································································ 373
Configuring an FXO voice subscriber line ········································································································ 373
Configuring one-to-one binding between FXS and FXO ················································································· 374
Configuring SIP local survival ································································································································ 382
Configuring SIP local survival ····································································································································· 383
Service configuration ·········································································································································· 383
User management ··············································································································································· 384
Trusted nodes ······················································································································································· 385
Call-out route ························································································································································ 385
Area prefix ··························································································································································· 386
Call authority control ··········································································································································· 387
SIP local survival configuration examples ················································································································· 388
Configuring local SIP server to operate in alone mode ·················································································· 388
Configuring local SIP server to operate in alive mode ···················································································· 391
Configuring call authority control ······················································································································ 393
Configuring an area prefix ································································································································ 398
Configuring a call-out route ································································································································ 401
Configuring IVR ······················································································································································· 404
Overview ······································································································································································· 404
Advantages ··································································································································································· 404
Customizable voice prompts ······························································································································ 404
Various codecs ···················································································································································· 404
Flexible node configuration ································································································································ 404
Customizable process ········································································································································· 405
Successive jumping ············································································································································· 405
Error processing methods ··································································································································· 405
Timeout processing methods ······························································································································ 405
Various types of secondary calls ······················································································································· 405
Configuring IVR ···························································································································································· 405
Uploading media resource files ························································································································· 405
Importing a media resource through an MoH audio input port ····································································· 406
