Back Panel
Figure 2-2 Back Panel Connectors
Power – Connects the ISDN TA to the power cord and adapter,
which deliver 12V DC power
Analog Device Ports 1 and 2 – Connect the ISDN TA to two
analog devices, such as a telephone or fax machine
USB port – Connects the ISDN TA to your computer’s 12 Mbps
USB port (if supported on your system)
Config button – Resets the ISDN TA to its factory default
settings
RS-232 port – Connects the ISDN TA to your computer’s serial
port at rates of up to 230.4 Kbps
ISDN port – Connects the ISDN TA to your ISDN outlet (like a
telephone line’s wall jack)
Connecting Your ISDN TA to Your Computer
Your ISDN TA can be connected to your computer using a serial cable
or a USB cable.
Using a Serial Cable
The serial port on your ISDN TA is shown in the illustration of the
back panel above. It is labeled “RS-232.” You must provide the serial
cable.
If you are using a Macintosh, you will need a serial cable with one 25-
pin male end and one mini DIN eight-pin male end.
If you are using an IBM-compatible PC, look at the back of your
computer to determine what sort of serial cable you should use.
The serial port on the back of your computer will likely be labeled
“COM,” “SERIAL,” “RS-232,” or “10101.” Consult your computer’s
manual if you have trouble finding a serial port.
If the serial port on your IBM-compatible computer has nine pins,
you will need a serial cable with one 25-pin male end and one
nine-pin female end.
If the serial port on your IBM-compatible computer has 25 pins,
you will need a serial cable with one 25-pin male end and one 25-
pin female end.
Caution: Before connecting your ISDN TA, be sure that your
computer is turned off.
