Nortel Networks 1000S - Manual (Page 25)

System architecture Page 25 of 44
Communication Server 1000S Overview
Figure 2
CS 1000S components in a rack
NTDU30 Call Server
NTDU27 Signaling Server
NTDU14 Media Gateway 1000S
NTDU15 Media Gateway
1000S Expander
Customer Supplied
Ethernet Switch
Power over LAN unit (optional)
553-AAA2256