Toshiba U200 PLUA0C-PT602E Users Manual Canada; English - Page 230
Dial tone detect, Busy tone detect, Zn Recall stored profile, &Cn Data Carrier Detect (DCD) control
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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 ERROR 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 ERROR 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. &C0 The state of the carrier from the remote modem is ignored. DCD circuit is always on. &C1 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 ERROR Otherwise &Dn DTR control This command interprets how the modem responds to the state of the DTR signal and changes to the DTR signal. &D0 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 &D1 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. C-6 User's Manual