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Remote Modem Installation Instructions
28i/124i
Local Connection
1. Using the correct cable configuration (28i=92708-DB9, 124i=92009-DB9),
connect the DIN connector on the cable (P/N 80893) to the 8-pin serial
(LAPB) connector on the CPRU.
2. Connect the 9-pin adaptor to the opposite end of the cable.
3. Plug the connector into the COM port on your PC.
Skip to "5. Connecting to the Site".
28i Cabinet Shown
PC
Mod 8 to
9 Pin Connector
(P/N 85980)
9-Pin Connector
Not Used
for Modem
Connection
24 CPRU PCB
8 Pin DIN to Mod 8 Cable
The 28i uses P/N 92707x.
The 124i uses P/N 80893.
Mod 8 to 25 Pin Connector
(P/N 85981)
25 Pin Connector
(Cable included with Modem)
9-Pin Connector
Modem
6
ASTU PCB
LAPB PCB
66MI-50
Station Block
25-Pair
Cable
Station
Cable
625
Modular
Jack
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