Acer Modemconte user manual Section Six Troubleshooting, Modem does not respond to commands

CONNECT 0300/REL	16	CONNECT 1200/REL	17
CONNECT 2400/REL	18	CONNECT 4800/REL	19
CONNECT 9600/REL	20	CONNECT 19200/REL	21
CONNECT 38400/REL 26		CONNECT 57600/REL	27

NEGOTIATION PROGRESS CODES

CARRIER 300	40	CARRIER 1200/75	44
CARRIER 75/1200	45	CARRIER 1200	46
CARRIER 2400	47	CARRIER 4800	48
CARRIER 7200	49	CARRIER 9600	50
CARRIER 12000	51	CARRIER 14400	52
COMPRESSION: CLASS 5			66
COMPRESSION: V.42BIS			67
COMPRESSION: NONE			69
PROTOCOL: NONE			70
PROTOCOL: LAP-M			77
PROTOCOL: ALT			80

Section Six - Troubleshooting

This section describes some of the common problems you may encounter while using your modem. If you can not resolve your difficulty after reading this chapter, contact your dealer or vendor for assistance.

Modem does not respond to commands.

1.Make sure the communication software is configured to “talk” to the modem on the correct COM port and IRQ setting (same COM port and IRQ setting as the modem). Your communication software must know which address your modem is using in the system in order to pass data to it. Similarly, IRQ settings must be set correctly to receive data from the modem.

2.Make sure that your modem is initialized correctly. Your modem may have been initialized to not display responses. You may factory-reset the modem by issuing AT&F and press ENTER. The factory default allows the modem to display responses after a command has been executed.

3.Make sure the baud rate setting in your software is set to 57600, 38400, 19200, 14400, 9600, 2400, 1200, or 300 bps. An incorrect baud rate prevents the modem from operating properly.

4.Make sure that the modem is not conflicting with another COM port or IRQ in a non-PnP system.

Modem does not dial.

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