Configuring registration parameters ················································································································· 646

Configuring voice mailbox server ····················································································································· 648

Configuring signaling security ··························································································································· 649

Configuring call release cause code mapping ········································································································· 650

Configuring PSTN call release cause code mappings ···················································································· 650

Configuring SIP status code mappings ············································································································· 651

SIP connection configuration examples ····················································································································· 651

Configuring basic SIP calling features ·············································································································· 651

Configuring caller ID blocking ··························································································································· 651

Configuring SRTP for SIP calls ···························································································································· 653

Configuring TCP to carry outgoing SIP calls ···································································································· 654

Configuring TLS to carry outgoing SIP calls ····································································································· 655

Managing SIP server groups ·································································································································· 657

Creating a SIP server group ······························································································································· 657

Configuring the real-time switching function ···································································································· 657

Configuring the keep-alive mode······················································································································· 658

Configuring the source address binding mode ································································································ 659

Configuring server information management ··································································································· 660

Configuring SIP trunk ·············································································································································· 662

Features ································································································································································ 663

Typical applications ············································································································································ 663

Protocols and standards ····································································································································· 664

Configuration task list ········································································································································· 664

Enabling the SIP trunk function ··························································································································· 665

Configuring a SIP server group ························································································································· 665

Configuring a SIP trunk account ························································································································ 665

Configuring a call route for outbound calls ·············································································································· 667

Configuring a call route for a SIP trunk account ······························································································ 667

Configuring fax and modem parameters of the call route of a SIP trunk account ······································· 669

Configuring advanced settings of the call route of a SIP trunk account ························································ 669

Configuring media parameters for SIP-to-SIP connections ·············································································· 671

Configuring signaling parameters for SIP-to-SIP connections ········································································· 672

Configuring a call route for inbound calls ················································································································ 673

SIP trunk configuration examples ······························································································································· 673

Configuring a SIP server group with only one member server ······································································· 673

Configuring a SIP server group with multiple member servers ······································································· 679

Configuring call match rules ······························································································································ 682

Managing data links ··············································································································································· 685

Overview ······································································································································································· 685

Introduction to E1 and T1 ··································································································································· 685

E1 and T1 voice functions ·································································································································· 685

E1 and T1 interfaces ··········································································································································· 686

Features of E1 and T1 ········································································································································· 687

Introduction to BSV interface ······························································································································ 687

Configuring digital link management ························································································································ 688

Configuring VE1 line ··········································································································································· 688

Configuring VT1 line ··········································································································································· 693

Configuring BSV line ··········································································································································· 695

Displaying ISDN link state ·································································································································· 700

E1 voice DSS1 signaling configuration example ····································································································· 700

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