AT Command Reference
INSYS Modem 56k small EU 2.1
48
Command
Description
ATD<n>
(Continuation)
Default:
Ringing tone is sent for fax operation. No ringing tone for data opera-
tion.
(
)
Are ignored: They are just used as an outline.
-
Are ignored: They are just used as an outline.
‚ ‚
Space characters are ignored: They are just used as an outline.
Examples:
ATD12345
Dial the phone number 12345
ATDP12345
Dial the phone number 12345 with the pulse dialling method
ATDT12345
Dial the phone number 12345 with the tone dialling method
ATX3D0W12345
For PBXs, which connect to the exchange line using the prefix 0 (or 9):
First, blind dialing is activated by:
X3
(refer to the
ATX3
command) to
be able to dial a leading 0 without hearing a dialling tone. After 0 has
been dialled via:
D0
, dialling tone recognition can be switched on again
using the parameter:
W
. The INSYS Modem 56k small EU 2.1 thus waits
for the dialling tone and continues with the rest of the dial-up (via:
12345) only after hearing the dialling tone. Waiting for the dialling tone
may be omitted. In this case, the dialling command is
ATX3D012345
.
AT&D<n>
DTR (CT108/2) Behaviour
DTR (CT108/2) behaviour – 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 operate
DTR.
AT&D1
A DTR on/off transition causes the INSYS Modem 56k small EU 2.1 to
react as if it had received an escape sequence
+++
. The INSYS Modem
56k small EU 2.1 changes to input mode without hanging up.
AT&D2
A DTR on/off transition causes the INSYS Modem 56k small EU 2.1 to
hang up. Going off-hook automatically is not possible. (default)
AT&D3
A DTR on/off transition causes the INSYS Modem 56k small EU 2.1 to
perform a reset as if an
ATZ
command has been executed. A preceded
AT&Y
command decides if either the default 0 or 1 is loaded.
AT+DS=<n>
Enable/disable V.42bis data compression
AT+DS=0
Disables V.42bis data compression
AT+DS=3
Enables
V.42bis
data
compression (default)
AT+DS44=<n>
Enable/disable V.44 data compression
AT+DS44=0
Disables V.44 data compression
AT+DS44=3
Enables V.44 data compression (default)