134 Bandwidth Management
Region Call progress
steps Configuration detail and call progress
during call setup
11 All branch offices are provisioned at the NRS to route all
outbound calls (from the branch office) through the main
office. (NRS tandem configuration).
12 Main office sends all UDP calls to destinations that are not
its own branch office to the NRS with unchanged dialled
digits.
13 Main office sends all UDP calls to destinations that are its
own branch office to theNRS with a specific gateway prefix
in front of the dialled digits.
14 All branch offices delete the prefix and any LOC codes, and
terminate the calls. May be to a local set or to a trunk.
2,3 Similar call setup steps take places for calls within region 2
and 3.
Differences when every branch office HLOC is shared with the main
office Table11 "Provisioning details for this case" (page 134) shows the
configuration when the branch office HLOC is shared with the main office.
Table 1 1
Provisioning details for this case
Region Provisioning detail
1Provisioning on the main office requires parsing to only normal LOC
identification and HLOC deletion.
1LOC values that are on branch offices may be provisioned as
extended LOC (> 3 digit codes).
1The DMI for the branch office LOC inserts a gateway routing prefix in
front of the number.
2,3 Similar configuration, as above, applies to regions 2 and 3.
Call between two branch offices associated with the same main office
The following scenarios describe calls between two branch offices that
belong to the same main office. the different scenarios described below
vary in the manner in which the HLOC is architected; branch offices have
same HLOC as the main office, branch offices havea different HLOC than
the main office and so on.
Every branch office HLOC is shared with the main office
In the following example,the HLOC of all the branch offices and the HLOC
of the main office are all the same. See Figure 45 "Call flow for Scenario 1 -
local call" (page 135).
Nortel Communication Server 1000
Main Office Configuration Guide forSRG 50
NN43001-307 02.02 Standard
Release 5.0 3 December 2007
Copyright© 2005-2007, Nor tel Networks
.