Chapter 6 Modem Reference
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6.3.3 Manual Answer an Incoming Call
Command line:
ATA <CR>
The factory setting of the S-register S0 is S0=0. This condition disables the auto answer
capability so that you must issue an ATA command to answer a call. At power up, your
modem always monitors if there are incoming rings. If incoming rings are detected, your
modem will display result codes on the screen as :
RING
:
:
RING
Seeing that, you may issue the ATA command to answer the call. This command must be
entered within the quiet interval between any two rings.
6.3.4 Auto Answer an Incoming Call
Command line: AT S0=2 &W &Y <CR>
Auto answer can be enabled by changing the setting of the S-register S0 to a value between 1
and 255. In the above command line, S0=2 instructs the modem to answer an incoming call
automatically after the 2nd ring. The &W command writes this configuration to profile 0 in
NVRAM. &Y command instruct the modem to load profile 0 as the active configuration on
power-up. The last two commands make S0=2 the default value at power-up or reset.
This example also shows the insertion of space between two neighboring commands to make
the command line more readable.
6.3.5 Voice to Data Switch
Command line: ATA <CR> or ATX1D <CR>
If you are talking with a remote modem user through the telephone set and want to initiate data
communication with the remote modem, follow the procedures below:
1.
You or the remote user issue an ATA command first to switch to data communication.
2.
When the person on the other end hears an answer tone from the phone, issues an
ATX1D command (X1 to disable the dial tone monitor) to instruct the modem to go off-
hook and wait for a carrier. If connection is successful, the CONNECT XXXX result
code will be displayed on the screen. Now you can hang up your phone and begin data
communication with the remote modem.
