Installing a Serial Cable 2-3
Installing a Serial Cable
You will need the following type of serial cable.
■ For a Macintosh computer, you will need a 25-pin male to
mini DIN 8-pin male serial cable. Refer to the information
enclosed in your 3C882 ISDN modem package to order a free
cable. If you are providing your own serial cable, ensure that
it meets the pin specifications provided in Appendix C.
■ For a PC, you will need the 25-pin male to 9-pin female serial
cable that was provided. For PCs with a 25-pin serial port
connector, you will need to purchase a standard 9-pin to
25-pin adapter.
D Green D Channel Status. Indicates the ISDN physical network
interface and D channel status:
Goes off once the physical and D channel signaling are
synchronized.
Flashes if the physical interface establishes synchronization
and the ISDN D channel signaling procedures are not properly
established.
Remains lit if the physical ISDN interface is not synchronized or
is disconnected.
B1 Amber
or
green
B1 Channel Activity. Green indicates a circuit-switched data
call in progress. Amber indicates a circuit-switched voice call in
progress. If a call is in a dialing state, the LED flashes. When the
call is disconnected, the LED goes off.
B2 Amber
or
green
B2 Channel Activity. Green indicates a circuit-switched data
call in progress. Amber indicates a circuit-switched voice call in
progress. If a call is in a dialing state, the LED flashes. When the
call is disconnected, the LED goes off.
SD Green Send Data. Indicates that information is being transmitted
over the serial data port from the computer to the ISDN
modem.
RD Green Receive Data. Indicates that information is being transmitted
over the serial data port to the computer from the ISDN
modem.
DTR Green Data Terminal Ready. Indicates that communication between
the ISDN modem and computer has been established.
LED Color Description
