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Remote Modem Installation Instructions
384i/704i
Pin-Out Details
Connector
RS-232-C Pin Out Information
RS-232-C
Connector
Description
8
DCD
3
RXD
2
TXD
20
DTR
6
DSR
4
RTS
5
CTS
7
GND
13
12
11
25 24 23 22 21 20 19 18 17 16 15 14
To connect to a local PC, skip to the "3. Connecting to the System".
2. Initialize the Site Modem
You must send an initialization (INIT) string to your modem before connecting it to
the system. You'll need a laptop (or other PC) on site to do this. There are three
parts to this procedure:
•
Connecting the modem to your laptop.
•
Entering the site modem INIT string into the Remote Maintenance program.
•
Sending and storing the INIT string in the site modem.
To connect the modem to your laptop (refer to the illustrations on page 18 and 19):
1. Connect the modem power supply to the POWER jack on the back of the
modem.
2. Plug the male end of the 9-pin RS-232-C straight through cable that is included
with the CNet modem into the RS-232 connector on the back of the modem.
3. Plug the 9-pin female end of the same cable into the serial port on the back of
your laptop (or PC).
Check the manuals that came with your computer if you're not sure
how to set up and connect the modem.
4. Plug the modem power supply into a 120 V AC receptacle and turn the unit on.
RS-232C
Direction of Signal Flow
(
output or
DCE
(3-DCI, DCI-A
or Modem)
25-Pin RS-232-C
Connector
10
9
8
7
6
5
4
3
DCI-to-Modem Adaptor
input)
DTE
(PC or
Printer)
2
1
14
(P/N 92268A)
DCI-to-Modem
Adaptor Pin Out
Information
25-Pin
Connector
to
1
to
2
to
3
to
4
5
to
to
7
8
to
to
20
1
3
2
5
4
7
20
8
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