Nortel 1000 Fundamentals page 41

Figure 13 "Multiple customer network" (page 41)
multiple customer network. The figure shows two customers: Customer 1
(Ottawa) and Customer 2 (Belleville), each with their own set of associated
phones and Signalling Servers. This type of configuration is required for any
deployment that uses the Telephony Gateway and Services functionality,
or in scenarios where both Telephony Gateway and Services and Remote
Call Control functionality is deployed.
Figure 13
Multiple customer network
The Signaling Server for Customer 1 is in the domainOne.com domain.
For each customer, you must configure a separate Office Communications
Server domain. The Office Communications Server domain used by
Customer 1 is in the same domain as the Signaling Server domainOne.com.
Each OCS domain requires a separate Active Directory.
The only equipment that Customer 1 and Customer 2 share is the CS 1000
and the NRS. The NRS can only be shared by the two customers if it is
configured with both domainOne.com and domainTwo.com.
Nortel Converged Office Fundamentals — Microsoft Office Communications Server 2007
Copyright © 2005–2008, Nortel Networks
.
Nortel Communication Server 1000
NN43001-121 01.03 Standard
Release 5.0 30 April 2008
Network configuration 41
provides an example of a