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PN: 1725-36122-001_M.doc
31
Four-wire digital interface
The wiring diagram below shows the connections required for a four-
wire interface (CPF316). Each Interface Module of this type requires
two backboards which will be-wired as indicated.
A
B
Receive (RX)
To PBX
Telephone Ports
Pair 1-16
Transmit (TX)
From PBX
Telephone Ports
Pair 1-16
Power Pairs 18-19
Base Stn. 1-6
Data Pairs 20-25
Bast Stn.1-6
To
PBX
To
Base Stations
Pair 17 - Unused
1 2 3 4 5 6 7 8 9 10 11 12
Four-wire Digital Connections