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2.3
Additional Installation Requirements
•
In addition to the ZyXEL modem you just purchased, you must have the following
equipment to operate your modem:
•
Computer terminal.
•
Available PC serial port with a high-speed 16550 UART.
•
Standard "straight-through" RS-232 cable (pins 1-8, 20, and 22).
•
Available telephone jack.
•
Available AC wall outlet.
•
Telephone line from your telephone company (dial-up or leased line).
•
Data and fax communication software.
2.4
Connecting the Modem
Connect the power plug from the adapter to the power jack and plug the other end into an
electrical outlet. When you connect your modem to the power line, make sure you only
use the power adapter that is supplied with this unit. Use of another adapter may not allow
your modem to operate and could result in serious damage to the unit.
This adapter is rated for direct connection to an AC power outlet.
Turn off the power on both the computer and the modem before making connections.
Then connect the modem according to the rear panel labels.
Note: Before using RS-232 to connect your modem to your PC, please find the COM port
on the back of your PC to determine the pin type of the required connector.
Modem Installation
U-90E Data/Fax Modem
2-5
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