WorldPhone Liberator – Chapter 5. Appendices
C-1
General
The
AT
command set allows you to configure the WorldPhone ASD
function directly from your PC keyboard. The AT
characters are a
prefix to the commands you issue to the WorldPhone’s ASD service.
Most communication applications do not require knowledge of AT
commands.
Every time you type AT, you are essentially asking for the
WorldPhone ASD’s
AT
tention. For instance, if you want to answer an
incoming data call, you would type ATA to answer:
ATAç
When a value associated with a command is not entered, it is as-
sumed to be 0, f.ex.:
AT&D
equals
AT&D0
.
Hanging up – escape sequence
Once the the WorldPhone ASD is online to another system, the only
command it recognises is an
escape code
that contains three typed
pluses, (+) which forces the WorldPhone ASD back to
command
mode
.
The following should be done, when issuing the escape command:
•
Wait one second after sending the last item of data.
•
Type
+++
with less than one second between the characters.
•
Wait one second, an "OK" response should appear.
Do not type the AT prefix or Carriage Return. The guard time of one
second before and after the code prevents the WorldPhone ASD from
misinterpreting the occurrence of +++ in the transmitted data stream.
If necessary, the character used in the escape code or the duration of
the guard time can be changed by altering Register S2 or S12,
•
In response to
+++
, the WorldPhone ASD returns to command
mode.
•
To hang up, key
ATHç
•
To return to online mode, key
ATOç
Appendix C – AT commands
AT commands
AT commands
Appendix C
