Page 132
AT#C V.25 Calling Tones
The #C command determines whether the modem will generate V.25 calling tones when operating
in originate mode.
V.25 calling tones are generated as a measure of courtesy if the telephone number you dial is
answered by a person rather than a modem or other electronic device. It also allows an electronic
device to select the appropriate operating mode.
V.25 tones indicate to the answerer of a call that a modem in data mode (not fax) is the originator
of the call.
Options
AT#C0 V.25 calling tones disabled
AT#C1 ■V.25 calling tones enabled
See Also
X command Response codes
D command F or ^ dial modifiers
Range
0-1