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Configuring number substitution ··································································································································· 66
Number substitution on the calling router ··········································································································· 67
Number substitution on the called router ············································································································ 67
Configuring global number substitution ·············································································································· 68
Configuring number substitution for a voice entity ···························································································· 69
Examples ································································································································································ 70
Configuring a priority for a voice entity ······················································································································ 71
Configuring a number sending mode ·························································································································· 71
Procedure ······························································································································································· 71
Examples ································································································································································ 71
Configuring a dial prefix ··············································································································································· 73
Dial program configuration examples ························································································································· 73
Configuring number substitution ·························································································································· 74
Configuring caller group control ························································································································· 76
Configuring SIP ·························································································································································· 79
Overview ········································································································································································· 79
Terminology ··························································································································································· 79
SIP functions ··························································································································································· 79
SIP messages ·························································································································································· 80
SIP configuration task list ··············································································································································· 80
Configuring SIP UA registration ··································································································································· 81
Configuration prerequisites ·································································································································· 81
Configuring SIP credentials ·································································································································· 82
Enabling a POTS entity to register with the registrar ························································································· 84
Configuring registrar information ························································································································ 84
Displaying SIP UA registration status ·················································································································· 85
Configuring the call destination address for a VoIP entity ························································································ 85
Configuring the call destination IP address for a VoIP entity ············································································ 85
Configuring a VoIP entity to obtain the call destination address from a proxy server ·································· 85
Configuring the destination domain name and port number for a VoIP entity ··············································· 86
Configuring extended SIP functions ····························································································································· 86
Configuring out-of-band DTMF····························································································································· 86
Configuring periodic refresh of SIP sessions ······································································································ 87
Configuring PSTN cause-to-SIP status mappings ································································································ 87
Configuring caller privacy ···································································································································· 88
Setting the P-Asserted-Identity or P-Preferred-Identity header field ··································································· 88
Displaying and maintaining SIP ··································································································································· 89
SIP UA configuration examples ···································································································································· 89
Configuring direct SIP calling ······························································································································ 89
Configuring SIP calling through a SIP server ······································································································ 90
Configuring SIP calling through DNS ················································································································· 92
Configuring out-of-band DTMF····························································································································· 93
Configuring SIP trunk ················································································································································· 96
Background ····································································································································································· 96
Features ··········································································································································································· 97
Typical applications ······················································································································································· 97
Protocols and standards ················································································································································ 98
SIP trunk configuration task list ····································································································································· 98
Enabling SIP-to-SIP calling ············································································································································· 98
Configuring a SIP trunk account ··································································································································· 99
Enabling codec transparent transmission ···················································································································· 99
Enabling media flow-around ········································································································································· 99
Enabling DO-EO conversion ······································································································································· 100
