Comtrol AT Commands for SmartACFL User Manual

Page 46

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Command Reference Manual

3-26

Conexant

100722A

3.2.3.2 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

3.2.3.3 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

3.2.3.4 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, 1.0, or 2 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.)

3.2.3.5 H - Disconnect (Hang-Up)
This command initiates a hang up sequence.

This command may not be available for some countries due to PTT restrictions.

Syntax

H<value>

Defined Values

<value>

Decimal number corresponding to the selected option.

0

The modem will release the line if the modem is currently on-line, and will
terminate any test (AT&T) that is in progress. Country specific, modulation specific,
and error correction protocol specific (S38) processing is handled outside of the H0
command.

1

If on-hook, the modem will go off-hook and enter command mode. For US models,
the modem will remain off-hook. For W-class models, the modem will return on-
hook after a period of time determined by S7.

Result Codes

OK

<value> = 0 or 1.

ERROR

Otherwise.

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