
MULTISERVER 500
52
PBX
Trunk
Side
Station
Side
Multiserver 500 with FXO
Interface Module
PBX
Station
Side
Trunk
Side
Multiserver 500 with E&M
Interface Module
Access
Code
Access
Code
Figure 7-5. FXO and E&M Voice/Fax Connections
Serial
Interface
Module
Multiserver 500
Voice/Fax
Interface
Module
(FXS)
Mux
Composite
Driver
Digital
Processing
Unit
Figure 7-4. Local Composite Loopback Test.