User guide

Command Description
ATM1
Speaker is on during call establishment but goes off when carrier is detected
(default).
ATM2 Speaker is always on.
ATM3 Speaker if off during dialing and when receiving carrier but on during answering.
ATQ0 Enables result codes to the DTE (default).
ATQ1 Disables result codes to the DTE.
ATSr Establishes S-register “r” as the default register.
ATSr=n Sets S-register “r” to the value “n.”
ATSr? Reports the value of S-register “r.”
ATV0 Enables short-form result codes.
ATV1 Enables long-form result codes.
ATW0
Upon connection, the modem reports only the DTE speed (for example,
CONNECT 9600). Subsequent responses are disabled (default).
ATW1
Upon connection, the modem reports the modulation type, line speed, the error
correction protocol and the DTE speed. Subsequent responses are disabled.
ATW2
Upon connection, the modem reports DCE speed (for example, CONNECT
2400). Subsequent responses are disabled.
ATX0
Ignores dial and busy tone. Sends CONNECT message when a connection is
established by blind dialing.
ATX1
Disables monitoring of busy tones. Sends only OK, CONNECT, RING, NO
CARRIER and ERROR messages. If busy tone detection is enforced and busy
tone is detected, NO CARRIER will be reported instead of BUSY. If dial tone
detection is enforced or selected and dial tone is not detected, NO CARRIER will
be reported instead of NO DIALTONE.
ATX2
Disables monitoring of busy tones. Sends only OK, CONNECT, RING, NO
CARRIER, ERROR, NO DIALTONE and CONNECT XXXX. If busy tone
detection is enforced and busy tone is detected, NO CARRIER, will be reported
instead of BUSY. If dial tone detection is enforced or selected and dial tone is not
detected, NO CARRIER will be reported instead of NO DIALTONE.
ATX3
Enables monitoring of busy tones. Sends only OK, CONNECT, RING, NO
CARRIER, ERROR, NO DIALTONE and CONNECT or CARRIER XXXX. If dial
tone detection is enforced and dial tone is not detected, NO CARRIER will be
reported.
Appendices 82