Nortel Networks Remote Gateway 50 - Manual (Page 97)

Bandwidth Management Page 97 of 258
Main Office Configuration for Survivable Remote Gateway 50 Configuration Guide
Table 6 describes the network configuration and the steps that a call takes
during its setup.
Table 6
Configuration details for the general case
Region
Call progress
steps Configuration detail and call progress
during call setup
1, 2, 3 UDP used for all calls within the region.
1, 2, 3 UDP used for region to region calls.
1, 2, 3 Prefixes for branch offices for regular calls are
required for all branch offices. May have additional
prefixes for E-911 calls, if required, or may share
prefixes.
1 1 All branch offices are provisioned at the NRS to route
all outbound calls (from the branch office) through
the main office. (NRS tandem configuration).
1 2 Main office sends all UDP calls to destinations that
are not its own branch office to the NRS with
unchanged dialled digits.
1 3 Main office sends all UDP calls to destinations that
are its own branch office to the NRS with a specific
gateway prefix in front of the dialled digits.
1 4 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.