User`s guide

24
Command Option Function
V Result-Code Format
Determines whether the modem sends short-
or long- form messages to the communications
application, indicating the connection status,
rate and mode.
V0 Return Numeric Code (Short Form)
V1 Return Text (Long Form)
X Select Call-Progress Result Codes to
Return
X0 No Carrier; Connect. Modem reports lack of a
carrier signal; connection success/failure;
modem dials without waiting for a dial tone
X1 No Carrier; Connect; Connect <rate>. Modem
reports lack of a carrier signal; connection
success/failure, and the computer data rate
established
X2 No Carrier; Connect; Connect<rate>; No Dial
Tone. Modem reports lack of a carrier signal;
connection success/failure; the computer data
rate established; and the lack of a dial tone
X3 No Carrier; Connect; Connect <rate>; Busy-
tone. Modem reports lack of a carrier signal;
connection success/failure; the computer data
rate established; and the presence of a busy
signal
X4 No Carrier; Connect; Connect <rate>; No Dial-
tone; Busy-tone. Modem reports lack of a
carrier signal; connection success/failure; the
computer data rate established; the lack of a
dial tone; and the presence of a busy signal
Z Z Reset Modem Parameters to Default
Configuration
&C DCD Control
&C0 Always Asserted
&C1 Asserted in Data Mode Only
&D DTR Control
Determines how modem responds to DTR signal
from DTE.
&D0 Ignore DTR
&D1 Enter Command mode when DTR transitions
from asserted to de-asserted
&D2 Disconnect call when DTR transitions from
asserted to de-asserted
&D3 Reset modem parameters to default
configuration when DTR transitions from
asserted-to-de-asserted
&G Guard Tone
&G0 off
&G1 550 Hz Guard Tone