Nortel Networks NN10029-111 manual Appendix a Basic call flows, Voice plus video

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Appendix A: Basic call flows

Using SIP as the signaling protocol to establish a communication path between endpoints, the SIP Application Module provides the following call services:

•Voice plus video

•Call transfer

•Authentication

The following sections provide sample diagrams and descriptions of the call flows that enable these specific services. For an overview of a basic call flow, see the MCP Basics document.

Voice plus video

Figure 1, “Client-to-client voice plus video diagram,”and Figure 2, “Client-to-client voice plus video callflow,” show the basic call flow for

aclient-to-client voice-plus-video call. Each client in the diagram has a User Agent. The SIP Application Module provides Back-to-Back User Agent service, treating each SIP call as an independent Ingress and Egress leg. A detailed, step-by-step illustration follows this diagram.

Copyright © 2003, Nortel Networks

MCP SIP Application Module Basics

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Contents MCP SIP Application Module Page How this chapter is organized OverviewFunctional description OverviewAgent Client Internal Protocol Back-to-Back User Agent service UserANetwork configuration BiggerMart.com BigMart.comPublic network InterfacesProtocols PCPSQL Hardware Services and featuresRouting and Translation services Foreign termination Call Transfer service Local terminationTelephony routing Relationship between Telephony routing stages SIP Aliases Multiple Route Termination Call Processing Language Interworking services Discriminator serviceBearer Path Control Privacy Control serviceService package enforcement Authentication servicesConverged PC service Network/Address Hiding service Enterprise Clients Notification support Instant Messaging PresenceVoicemail server interoperability and MWI Nortel Networks Confidential Overview Registration-static and dynamic Overload control Network address bookReliability and fault tolerance Manual failover OAM&P strategy Updating the SIP Application Module software UpgradesUpdating the Application Module from the menu tree Updating the SIP Application Module from the pull-down menu Load list for updating Progress of update Page Procedure 1 Clearing the SLE701 Slee Health Monitor alarm Alarm clearing proceduresProcedure 2 Clearing the SMDI101 alarm Configuration Configuration Nortel Networks Confidential Displaying help text Adding a component Procedure 1 Adding a componentAdding a component Configuration window top half Adding Services Progress dialog box Configuring the SIP Application Module tabs Field Value Description Application Server tab field descriptions Sheet 2Configuration Nortel Networks Confidential Nortel Networks Confidential Configuration Configuration Nortel Networks Confidential URL Configuration Nortel Networks Confidential Nortel Networks Confidential Configuration Configuration Nortel Networks Confidential Completing the Database Base tab fields DNS SRV Completing the Data Synchronization tab fields Locate User Svc tab field descriptions Sheet 2Configuration Nortel Networks Confidential Nortel Networks Confidential Configuration Configuration Nortel Networks Confidential Nortel Networks Confidential Configuration Completing the Local Accounting Manager tab fields Completing the In Memory Database tab fields Configuration Nortel Networks Confidential Memory Database tab field descriptions Sheet 2 Completing the Location Service tab fields Location Service tab field descriptions Sheet 2 Configuration Nortel Networks Confidential Nortel Networks Confidential Configuration Configuration Nortel Networks Confidential Nortel Networks Confidential Configuration Privatestaticaddress whose value Server.blade.host.label forCompleting the Server Subscription tab fields Addrsip Porthttp Portprotocol Nortel Networks Confidential Configuration Configuration Nortel Networks Confidential Nortel Networks Confidential Configuration Configuration Nortel Networks Confidential SipFwdAdapter tab field descriptions Sheet 2 Completing the Transport Management tab fields Nortel Networks Confidential Configuration Configuration Nortel Networks Confidential Nortel Networks Confidential Configuration Configuration Nortel Networks Confidential Nortel Networks Confidential Configuration Figure above Nortel Networks Confidential Configuration Transport Management tab subfields, cont’d Transport Management tab subfield descriptions Active-standby server group configuration Nortel Networks Confidential Configuration Example Additional SIP TCF Base tab configuration informationTCF Config details UDP/TCP/SSL Config values Parameter Value DescriptionRetransmission Off parameter Invite Timer parameterAdd Defaults parameter Time Transaction parameterCheck Mandatory Headers parameter Accounting management Page Performance management Page Security Security and AdministrationPage Voice plus video Appendix a Basic call flowsClient-to-client voice plus video diagram Application Client a Module Client B Client-to-client voice plus video call flowCall transfer Call transfer to client diagram Client a Client C Client BApplication Client a Module Client B Client C Call transfer blind to client call flowAppendix a Basic call flows Nortel Networks Confidential Failed call transfer call flow Appendix a Basic call flows Nortel Networks Confidential Authentication diagram AuthenticationApplication Client a Module Database Authentication call flowNortel Networks Confidential Appendix a Basic call flows Page Page Page Page MCP SIP Application Module