Configuring advanced settings of a call route ·········································································································· 589

Configuring coding parameters of a call route ································································································ 589

Configuring other parameters for a call route ································································································· 590

Advanced settings configuration example ················································································································ 591

Configuring out-of-band DTMF transmission mode for SIP ············································································· 591

SIP-to-SIP connections ·············································································································································· 593

Configuring media parameters for SIP-to-SIP connections ······················································································· 593

Configuring signaling parameters for SIP-to-SIP connections ·················································································· 594

Configuring dial plans ············································································································································ 596

Dial plan process ························································································································································· 596

Regular expression ······················································································································································· 597

Dial plan functions ······················································································································································· 599

Number match ····················································································································································· 599

Call control ··························································································································································· 600

Number substitution ············································································································································ 600

Configuring dial plan ·················································································································································· 601

Configuring number match ································································································································· 601

Configuring call control ······································································································································ 602

Configuring number substitution ························································································································ 606

Dial plan configuration examples ······························································································································ 608

Configuring number match mode ······················································································································ 608

Configuring the match order of number selection rules ·················································································· 610

Configuring entity type selection priority rules ································································································· 613

Configuring call authority control ······················································································································ 617

Call connection ······················································································································································· 628

Introduction to SIP ························································································································································ 628

Terminology ························································································································································· 628

Functions and features of SIP ····························································································································· 629

SIP messages ························································································································································ 630

SIP fundamentals ················································································································································· 630

Support for transport layer protocols ························································································································· 633

SIP security ···································································································································································· 633

Signaling encryption ··········································································································································· 634

Media flow encryption ········································································································································ 634

TLS-SRTP combinations ········································································································································ 635

Support for SIP extensions ··········································································································································· 635

Configuring SIP connections ·································································································································· 636

Configuring connection properties ····························································································································· 636

Configuring registrar ··········································································································································· 636

Configuring proxy server ···································································································································· 638

Configuring session properties ··································································································································· 638

Configuring source address binding ················································································································· 638

Configuring SIP listening ···································································································································· 640

Configuring media security ································································································································ 641

Configuring caller identity and privacy ············································································································ 642

Configuring SIP session refresh ·························································································································· 643

Configuring compatibility ··································································································································· 643

Configuring advanced settings ··································································································································· 645

Configuring the address hiding mode ·············································································································· 645

Specifying the outbound proxy ·························································································································· 645