xii
Configuring caller identity and privacy ··································································································· 281
Configuring SIP session refresh ············································································································· 282
Configuring compatibility ························································································································ 283
Configuring advanced settings ······················································································································· 284
Configuring the address hiding mode ···································································································· 284
Specifying the outbound proxy ··············································································································· 285
Configuring registration parameters ······································································································· 285
Configuring voice mailbox server ··········································································································· 287
Configuring signaling security ················································································································ 289
Configuring call release cause code mapping ······························································································· 289
Configuring PSTN call release cause code mappings ··········································································· 289
Configuring SIP status code mappings ·································································································· 290
SIP connection configuration examples ········································································································· 291
Configuring basic SIP calling features ··································································································· 291
Configuring caller ID blocking ················································································································ 291
Configuring SRTP for SIP calls ·············································································································· 293
Configuring TCP to carry outgoing SIP calls ·························································································· 293
Configuring TLS to carry outgoing SIP calls ·························································································· 295
Managing SIP server groups ······································································ 297
Creating a SIP server group ··················································································································· 297
Configuring the real-time switching function ·························································································· 297
Configuring the keep-alive mode ··········································································································· 298
Configuring the source address binding mode ······················································································· 299
Configuring server information management ························································································· 300
Configuring SIP trunk ·················································································· 302
Features ················································································································································· 303
Typical applications ································································································································ 303
Protocols and standards ························································································································ 304
Configuring SIP trunk ····································································································································· 304
Configuration task list ····························································································································· 304
Enabling the SIP trunk function ·············································································································· 305
Configuring a SIP server group ·············································································································· 305
Configuring a SIP trunk account ············································································································ 306
Configuring a call route for outbound calls ····································································································· 307
Configuring a call route for a SIP trunk account ····················································································· 307
Configuring fax and modem parameters of the call route of a SIP trunk account ·································· 309
Configuring advanced settings of the call route of a SIP trunk account ················································· 309
Configuring media parameters for SIP-to-SIP connections ··································································· 311
Configuring signaling parameters for SIP-to-SIP connections ······························································· 312
Configuring a call route for inbound calls ······································································································· 313
SIP trunk configuration examples ·················································································································· 313
Configuring a SIP server group with only one member server ······························································· 313
Configuring a SIP server group with multiple member servers ······························································ 319
Configuring call match rules ··················································································································· 322
Managing data links ···················································································· 325
Overview ························································································································································ 325
Introduction to E1 and T1 ······················································································································· 325
E1 and T1 voice functions ······················································································································ 325
E1 and T1 interfaces ······························································································································ 325
Features of E1 and T1 ··························································································································· 326
Introduction to BSV interface ················································································································· 327
Configuring digital link management ·············································································································· 327
Configuring VE1 line ······························································································································ 327
Configuring VT1 line ······························································································································· 333
Configuring BSV line ······························································································································ 335
Displaying ISDN link state ······················································································································ 340
E1 voice DSS1 signaling configuration example ··························································································· 340