Lucent Technologies Octel Unified Messenger Concepts and Planning Guide 101-1620-005 - Manual (Page 51)

System architecture
101-1620-005 3-3
1 PBX
2 Subscribers VMD1
3 Octel Tracing Server for VMD1
4 Octel Voice Server
5 Octel Tracing Server for VMD2
6 Microsoft Exchange server
7 Subscribers VMD2
Figure 3-1. Example of typical implementation of voice mail domains
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1
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LAN
London
LAN
San Francisco
WAN
Voice mail domain 2
Voice mail domain 1