User manual

Section 4
AT COMMAND SET
Copyright (C) Dataplex Pty Ltd
4-23
AT*A Alarm/Alert Mode
Parameters : 0 to 3
Default : 0 (Alarm off)
This command enables the Alarm function on the DPX-213.
AT*A0 - Alarm function disabled.
AT*A1 - Enabling this command will cause the modem to dial the number stored in
location 0 upon "wake up". When connected, the modem will send the string
stored in location 1. If the modem is woken by DTR, it will send the string stored
in location 2; if woken by TxD, it will send the string stored in location 2 and if
woken by Ring, the modem will ignore ring and then dial and send strings in
locations 1 and 4 respectively.
AT*A2 - The modem will "wake up" on any Ring, raise of DTR or TxD from DTE. By
invoking the AT&M command, the unit will dial the number stored in location 0
on rise of DTR and send the relevant alarm string on connection. Otherwise, the
modem will wait for an AT command or Answer when the ring limit is reached.
If the AT command originates the call then the alarm string is sent on call
connection, however, if the modem has answered the call then no alarm string is
sent.
AT*A3 - Reserved for future use.
See applications section for full description of this function.
AT*C Configuration Status
Parameters : None
Default : None
The AT*C command will display the active modem configuration. The table below shows
the default (AT&F) configuration.
CONFIGURATION
STATUS CONFIGURATION STATUS
B Bell/CCITT 0 &M Sync/Async 0
E Echo 1 &P Pulse Ratio 1
F Format 0 &T RDLB Enable 0
T/P Tone or Pulse 0 &U DCE Flow Control 0
X Result Code 3 *A Alarm Mode 0
&C DCD Option 0 *D Dumb Mode 0
&D DTR Option 0 *E Compression 0
&E Error Control 0 *G Calling Tone 0
&G Guard Tone 0 *P Password 0
&I Constant Speed 1 *R Remote configuration 0
&K DTE Flow Control 1 *Y Break Handling 0
&L Leased Line 0