Comtrol AT Commands - Manual (Page 66)

AT Commands for CX81801/CX06833/CX81300/CX06827 Modems Reference Manual
Conexant 102184B
3-40
T - Set Tone Dial Default
This command forces DTMF dialing until the next P dial modifier or P command is
received. The modem will set an S-Parameter bit to indicate that all subsequent dialing
should be conducted in tone mode. The DP command will override this command. Clears
S14 bit 5.
This command may not be permitted in some countries. (See P.)
Result Code
OK
P - Set Pulse Dial Default
This command forces pulse dialing until the next T dial modifier or T command is
received. Sets S14 bit 5.
As soon as a dial command is executed which explicitly specifies the dialing mode for
that particular call (e.g., ATDT...), this command is overridden so that all future dialing
will be tone dialed. (See T command.)
This command may not be permitted in some countries.
Result Code
OK
A - Answer
The modem will go off-hook and attempt to answer an incoming call if correct conditions
are met. Upon successful completion of answer handshake, the modem will go on-line in
answer mode. This command may be affected by the state of Line Current Sense, if
enabled. (Most countries do not require Line Current Sense.) Operation is also dependent
upon +FCLASS command and country-specific requirements.
If +FCLASS=0 is selected, the modem will enter the connect state after exchanging
carrier with the remote modem. If no carrier is detected within a period specified in
register S7, the modem hangs up. Any character entered during the connect sequence will
abort the connection attempt.
If +FCLASS=1 or 1.0 is selected, the modem will go off-hook in V.21 answer mode. It
will generate the V.21 2100 Hz answer tone for 3 ± 0.5 seconds and, following a delay of
70 ms, will proceed as if the +FTH=3 command were issued. At any stage up to (but
excluding) the +FTH=3 command state, any character will abort the communication. (See
the description of the +FTH command for details.)