User`s guide

Section Four - Troubleshooting Communication

Software

Your modem is designed to provide reliable and trouble-free service. Should

you experience any difficulty, however, the information contained in this section

will assist you in determining and resolving the source of the difficulty. If you

cannot resolve your difficulty after reading this chapter, contact your dealer or

vendor for assistance.

4.1 Modem does not respond to commands.

1. Make sure the modem is not configured with a conflicting COM port and

IRQ setting . If another device in your system is also configured as the

same COM port, it will not work. Similarly, IRQ settings may not overlap.

2.Make sure the communication software is configured with the correct

COM and IRQ settings (same COM port and IRQ line as the modem).

Your communication software will not be able to send-to and receive-

from your modem any data if it does not have the correct COM and IRQ

settings of the modem.

3.Make sure the modem is properly initialized by the communication

software. Your modem may have been improperly initialized by the

software because you have selected an incorrect modem type. Select

"Rockwell" modem type in your data communication software (select

"Generic class 1" and "Rockwell" in your Fax software, respectively).

You may also be prompted to enter an initialization string by the

software. Use AT&F as your initialization string.

4.2 Modem dials, but does not connect.

1. Make sure the COM port setting is identical on both the system AND

the software.

2. Make sure the phone line is working properly. A noisy line will prevent

proper modem operation.

4.3 Modem makes a connection, but no data appears on your

screen.

1.Make sure all communication parameters (baud rate, data, stop, and

parity bits) are properly configured and identical on both sides. Be

certain hardware flow control (RTS/CTS - default) is enabled in both the