Datasheet

INSYS Modem 336/56k 4.1 (UL) AT Command Set
Command Description
AT&D<n> DTR (CT108/2) behavior
DTR (CT108/2) behavior - Monitoring on/off transitions of the RS232 DTR line of the PC.
AT&D0 DTR is ignored. Allows the operation with PCs which do not run DTR.
AT&D1 A DTR on/off transition causes the modem to react as if it had received an
abort sequence +++. The modem switches to the input mode without
hanging up.
AT&D2 A DTR on/off transition causes the modem to hang up. Going off-hook
automatically is not possible. (default)
AT&D3 A DTR on/off transition causes the modem to perform a reset as if an ATZ
command had been executed. A preceded AT&Y command decides if ei-
ther the default 0 or 1 is loaded.
AT\D<n> DTMF mode activation/deactivation
AT\D0 Switch off DTMF mode (default)
AT\D1 Switch on DTMF mode
When the DTMF mode is activated, the modem will be set into DTMF mode for incoming
calls. After the signal OK, the modem requires the input of the 4-digit PIN. The PIN input
is acoustically acknowledged.
The following commands can be performed via the phone keys:
Key Meaning
0* Terminate connection.
1*x Control switch output 1
x: 1: Set switch output 1
0: Reset switch output 1
Return: “OK”
2*x Control switch output 2
x: 1: Set switch output 2
0: Reset switch output 2
Return: “OK”
3* Query of the two alarm inputs:
Both alarm inputs are output as HIGH or LOW in succession. xxx
Return: “OK” – Status input 1 – Status input 2
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