Product data

USRobotics
Command Reference
Data Command Set - 41
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.
A - Answer
The modem will go off-hook and will 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 will hang up. Any character entered
during the connect sequence will abort the connection attempt.
If +FCLASS=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. Following a delay
of 70 ms, it 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.)
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.
1 If on-hook, the modem will go off-hook and remain in command
mode.
Result Codes
OK <value> = 0 or 1.
ERROR Otherwise.