Figure 45 "call flow for scenario 1 – Nortel Networks SRG 50 NN43001-307 User Manual

Page 135

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Network using Uniform Dialing Plan

135

Figure 45
Call flow for Scenario 1 - local call

1. The branch office user dials 6-395-3456. The system transmits

395-3456 to the NRS. The NRS checks its provisioning, and determines
that all calls are to be sent to the main office; it directs the call to the
main office.

2. The branch office sends the call to 395-3456 to the main office.

3. The main office determines that this is LOC 39534, to another branch

office, with gateway routing prefix 552. The system inserts the prefix and
transmits 552-395-3456 to the NRS. The NRS checks its provisioning,
and determines that all calls to prefix 552 are to be sent to branch office
A2; it directs the call to the branch office.

4. The main office sends the call to 552-395-3456 to the branch office. The

branch office deletes the prefix and the HLOC, and rings set 3456.

No branch office HLOC is shared with the main office, but can be shared
with another branch office

In this example, the HLOC of the branch offices are the same but the HLOC
of the main office is different. See

Figure 46 "Call flow for Scenario 1 -

local call" (page 136)

.

Nortel Communication Server 1000

Main Office Configuration Guide for SRG 50

NN43001-307

02.02

Standard

Release 5.0

3 December 2007

Copyright © 2005-2007, Nortel Networks

.

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