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DIVA T/A PC Card Reference Guide 34

COM Port Configuration

Commands

This section describes the COM Port Configuration commands.

Command Description

AT&Cn

Data Carrier Detect:

This command controls

the Data Carrier Detect (DCD) output.

n=0

DCD always enabled.

n=1

DCD tracks connection (default).

AT&Dn

Data Terminal Ready:

This command

controls interpretation of the Data Terminal

Ready (DTR) input.

n=0

Ignores status of DTR signal.

n=1

Monitors DTR signal: when an on-to-off

transition of DTR signal occurs, enter the

command state. Return to the online state when

the ATO command is issued.

n=2

Monitors DTR signal: when an on-to-off

transition of DTR signal occurs, hang up and

enters the command state (default).

n=3

Monitors DTR signal: when an on-to-off

transition of DTR signal occurs, hang up and

reset.

n=9

Monitors DTR signal: when an off-to-on

transition of DTR signal occurs, automatically

dial the stored telephone number 0

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Hayes-microcomputer-products PC Card Manual do Utilizador Página 34