Toshiba portege m400 Manual De Usuario

C-6

User’s Manual

AT Commands

Dial tone detect

Disabled: The modem dials a call regardless of whether it detects a dial 

tone.

Enabled: The modem dials only upon detection of a dial tone, and 

disconnects the call if the dial tone is not detected within 10 
seconds.

Busy tone detect

Disabled:

The modem ignores any busy tones it receives.

Enabled:

The modem monitors for busy tones.

Result Codes:
OK

n=0,1,2,3,4,5

Otherwise

Zn

Recall stored profile

The modem performs a soft reset and restores (recalls) the configuration 
profile according to the parameter supplied. If no parameter is specified, 
zero is assumed. Either Z0 or Z1 restores the profile.

Result Codes:
OK

n=0,1

Otherwise

&Cn Data Carrier Detect (DCD) control

Data Carrier Detect is a signal from the modem to the computer indicating 
that a carrier signal is being received from a remote modem. DCD normally 
turns off when the modem no longer detects the carrier signal.

The state of the carrier from the remote modem is ignored. 
DCD circuit is always on.

DCD turns on when the remote modem’s carrier signal is 
detected, and off when the carrier signal is not detected 
(default).

Result Codes:
OK

n=0,1

Otherwise

&Dn DTR control

This command interprets how the modem responds to the state of the DTR 
signal and changes to the DTR signal.

Ignore. The modem ignores the true status of DTR and treats 
it as always on. This should only be used if your 
communication software does not provide DTR to the 
modem

If the DTR signal is not detected while in on-line data mode, 
the modem enters command mode, issues an OK result 
code, and remains connected.