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34 Interworking requirements with CS 1000

CS 1000 Source Based Routing

CS 1000 Source Based Routing (SBR) occurs when the request Uniform

Resource Indicator (URI) of the INVITE message sent from the Mobile

Communication Client 3100 (MCC 3100) or the MCG 3100 contains the

tag x-nt-net-feature=x-nt-home. For example, the following request URI

triggers SBR:

INVITE sip:[email protected];x-nt-sip-line-service;x-nt-net-featur

e=x-nt-home SIP/2.0

SBR causes the CS 1000 Network Routing Service-SIP Proxy Service

(NRS-SPS) to route the call attempt (INVITE) to the P-Asserted-Id in the

SIP INVITE instead of using the Request URI.

Using SBR means that all calls from a SIP user route to the home call

server for origination, allowing the call server to apply features such as

Calling Line ID (CLID) and Network Class of Service (NCOS) to SIP calls.

In the MCG 3100, use the User Prefix/Phone-context for Call origination

field to configure SBR. For information, see Nortel Mobile Communication

3100 Administration and Security (NN42030-600).

CS 1000 engineering for MC 3100

The MCC 3100 for BlackBerry, MCC 3100 for Nokia, MCC 3100 for

Windows Mobile, and MCG 3100 depend on the following CS 1000

components:

• Call server

— Each user requires one Universal Extension (UEXT). Each UEXT

supports the SIP interface on the client. Configure the UEXT with

the Fixed Mobile Convergence Line (FMCL) subtype.The FMCL

subtype requires an Incremental Software Management (ISM)

independent of the Mobile Extension (MOBX) subtype.

— SIP Access Port license

• SIP Gateway, operating on the VxWorks Signaling Server platform

• SPS, using the NRS-SPS on the Linux-based NRS.

— Configure each MCG 3100 as a Dynamic Gateway Endpoint with

an endpoint name. Configure the Dynamic Gateway Endpoint with

authentication turned off.

— Each client requires the configuration of an NRS-SPS User

Endpoint (UE). Clients use the UE for user name and password

information, not for SIP routing. Therefore, the NRS-SPS must

never match a destination number against the client UEs (including

the corresponding UEXT Target DN).

Nortel Mobile Communication 3100

Nortel Mobile Communication 3100 Planning and Engineering

NN42030-200 03.04 17 July 2009

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