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14
MultiModemISDN User Guide
MTA128ST-USB
Connecting to Your Computer
1. Plug the 4-pin flat end (Type A) into a USB port connector on your computer or
laptop.
Note: Do NOT plug the D-shaped end (Type B) of the USB cable into the USB connector
on the back panel of the MTA128ST-USB at this time. You will make the connection at Step 2
when installing the software drivers.
Connecting to Power
1. Plug the power supply into the unit’s POWER connector.
2. Plug the power supply into a live AC outlet.
3. Turn on the unit by sliding the power switch to ON.
4. Verify operation by observing the LED indicators on the front panel. The LEDs will
initially flash in a self-test pattern. Then the LS LED remains on. (See LED
descriptions on the next page.) If the terminal adapter does not appear to be working,
see Chapter 5 for troubleshooting help.
Caution: Only use the power supply shipped with your MTA128ST-USB; any other power
supply could damage the unit and void its warranty.
Connecting to Your ISDN Network Terminator
1. If you need a longer line cord than the RJ-45 line cord provided with your
MTA128ST-USB, select a cord that is wired straight through (pin 1 to pin 1; pin 2 to
pin 2, etc.) with at least the middle four pins connected (pins 2, 3, 4, and 5).
2. Plug one end of the provided RJ-45 S/T line cord into the ISDN jack on the
MTA128ST-USB and the other end into the S/T jack on your network terminator.
Note: The AUX jack and ISDN jack are not interchangeable.
Connecting to Analog Equipment
You can connect an analog device such as an analog telephone, modem, or fax machine
to the unit. Simply plug the device’s modular RJ-11 telephone cord into the RJ-11 AUX
connector.
Note: The AUX jack and the ISDN jack on the unit are not interchangeable.