Nortel Networks NN10029-111 manual Nortel Networks Confidential Overview

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Nortel Networks Confidential	Overview 23

transmits the following information over a data link to a voicemail server:

•the called number (terminating party's telephone number)

•the calling number

•the type of call forwarding (for example, due to a busy line, an unanswered call)

This feature also provides an interface to pure IP solutions that use a SIP-enabled voicemail server. In this case, SIP messages provide the context data for each call needed by the voicemail server to record a voicemail message. Thus, a SIP-enabled voicemail server accepts Invites for calls routed to voicemail and sends Notify messages for MWI information. The software uses Real-Time Transport Protocol (RTP) to carry the voice media.

There are two configurations through which the SIP Application Module supports voicemail:

•A pure IP, third-party, SIP-enabled voicemail server that uses RTP to establish the voice path from the subscriber to the voicemail server while SIP provides the setup and MWI information.

•A legacy voicemail server that uses a SIP/PSTN gateway to establish the voice path from the subscriber to the PSTN-based voicemail server. The Simplified Message Desk Interface (SMDI) protocol provides the setup information. The platform uses any voicemail server that supports the SMDI protocol. There are two supported physical connections: a line-based gateway and a PRI/T1-based gateway.

Using either of the above configurations, there are three primary scenarios that this feature considers:

•MESSAGE DEPOSIT: An incoming call for a subscriber gets routed to voicemail because the called subscriber is unavailable, busy, or has all calls forwarded to voicemail.

•MESSAGE NOTIFICATION: The voicemail server sends an MWI status update to the SIP Application Module for a particular subscriber. The SIP Application Module then sends a message to the client(s) to update its MWI display.

Note: Clients do not store the MWI state. Only the Presence Module stores the state. When a client registers with the proxy

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 Telephony routing Call Transfer serviceLocal termination 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 Voicemail server interoperability and MWI Instant MessagingPresence 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 parameterCheck Mandatory Headers parameter Add Defaults parameterTime Transaction 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