Domain Naming - Nortel 1000 Fundamentals

The Route Data Block is ESN5 if the output from Element Manager, or a
terminal window, is:
TYPE RDB
CUST 00
DMOD
ROUT 10
DES IPROUTE
TKTP TIE
VTRK YES
ZONE 100
PCID SIP
... ANTK
SIGO ESN5
STYP SDAT
If the Route Data Block (RDB) already has associated Virtual Trunks and is
configured to SIGO STD, all Virtual Trunks must be removed before the RDB can
be changed to ESN5.

Domain naming

In most configurations where the CS 1000 acts as a SIP Gateway for a
Office Communications Server, it is recommended that the SIP Trunk
Domain name and the Office Communications Server Domain name be
an exact match.
In situations where both the OCS and the CS 1000 have already both been
assigned a domain name, and the domain names do not match, there is
an alternative. MCM can be configured to register to the NRS using an
End_Point_Name@Service_Domain_Name. For more information, see
Registration
The domain is listed under the Domains folder in the Management
console for Office Communications Server. For example, in
the next figure, the Office Communications Server Domain is
ocs2007a-ocsfe1.ocs2007a.corp.nortel.com.
Nortel Converged Office Fundamentals — Microsoft Office Communications Server 2007
Copyright © 2005–2008, Nortel Networks
.
Telephony Gateway and Services configuration 163
ATTENTION
Nortel Communication Server 1000
NN43001-121 01.03 Standard
Release 5.0 30 April 2008