28i/124i
Remote Modem Installation Instructions
124i PC Programming Cable Sets
For local PC connections, use DB9-to-8-Pin Cable Set (P/N 92009-DB9).
This cable set consists of the following two components:
●
8-Pin Circular Mini-DIN to Mod-8 Cable (P/N 80893)
This 10’ long cable has an 8-pin connector on one end (for connecting to the
LAPB) and a standard 8-pin modular plug on the other end.
●
DB9-to-Mod-8 Adaptor (P/N 85980)
One end of this adaptor accepts an 8-pin modular plug. The other end is a stan-
dard DB9 female connector that you can plug into a 9-pin RS232 (DTE) port on
your PC or laptop.
For modem connections, use DB25-to-8-Pin Cable Set (P/N 92009-DB25).
This cable set consists of the following two components:
●
8-Pin Circular Mini-DIN to Mod-8 Cable (P/N 80893)
This 10’ long cable has an 8-pin connector on one end (for connecting to the
LAPB) and a standard 8-pin modular plug on the other end.
●
DB25-to-Mod-8 Adaptor (P/N 85981)
One end of this adaptor accepts an 8-pin modular plug. The other end is a stan-
dard DB25 male connector. This connector is plugged into the DB25 female
connector on the cable that ships with the CNet modem. The 9-pin male connec-
tor on the CNet modem cable is then plugged into the DCE port of the modem.
Default Settings
The default settings for the LAPB card are 9600 bps, Start bit=1, Stop bit=1,
Parity=No, Character=8 bit. These settings cannot be changed.
Pin-Out Details
If you wish to use your own cables, follow the pin-out information below for the
cables and connectors.
28i 8-Pin DIN to Mod-8 Connector
124i 8-Pin DIN to Mod-8 Connector
DSR
1
1
RTS
2
8
RXD
3
5
SG
4
4
TXD
5
6
CTS
6
7
DTR
7
3
DCD
8
2
DSR
8-Pin DIN
Mod-8
1
1
RTS
2
8
RXD
3
5
SG
4
4
TXD
5
6
CTS
6
7
DTR
P/N 80893
Brown wire (Pin 1)
80000 - 51
5
2
4
8
7
7
3
DCD
8
2
1
3
6
92700 - 20
1
3
6
4
7
8
2
5
2
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