- Nortel IP Phone Mobile Communication Integration Guide

CS 1000 engineering for MC 3100 13

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:+16131234567@nortel.com;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).

SIP Gateway CLID Parameters conﬁguration

The SIP Gateway CLID parameters are used to adjust the format

of telephone numbers for incoming call appearances. For Mobile

Communication 3100 (MC 3100) these settings impact the format of

numbers that appear on the incoming call popup on the MCC 3100 client.

Figure 3

SIP GW CLID Parameters

Nortel Mobile Communication 3100

Mobile Communication 3100 and Communication Server 1000 Solution Integration Guide

NN49000-315 02.01 2 October 2009