AT Command, S-Registers, and Result Codes
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Answering Manually
If your communication program is in terminal mode when the RING result code appears on your monitor,
you can manually answer the call by typing ATA <cr>.
Answering Automatically
To cause the MTA128ST/NT to automatically answer a call:
1. Enable autoanswer by setting register S0to the ring on which you want the TAto answer (e.g., in
terminal mode, type S0=4 to make the TA answer on the fourth ring). You also can use either of the
configuration utilities to the turn on autoanswer and set the number of rings.
2. Make sure that the TA is offline.
The TA answers the call after the number of rings specified by S0.To disable autoanswer, use a configuration utility or
the command S0=0.
Note: If the user wants to accept calls while DTR is low, the TA must be configured to ignore DTR. To do this, en ter
AT&D0<cr>. With this configuration, the TA can accept calls while DT R is low. If this configuration setting is not
made, the TA rejects incoming calls until DTR is high while calls comes in.
Hanging Up To hang up a call, escape to online command mode (+++AT<cr>), then enter the H command
(ATH<cr>). The escape sequence and hang up command can be combined into one command string:
+++ATH<cr>.