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Helmholz Modem 56k small/Modem 56k USB small
49
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 in-
put 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
com-
mand decides if either the default 0 or 1 is loaded.
AT+DS=<n>
Activate/deactivate V.42bis data compression
AT+DS=0
Deactivates V.42bis data compression
AT+DS=3
Activates V.42bis data compression (default)
AT+DS44=<n>
Activate/deactivate V.44 data compression
AT+DS44=0
Deactivates V.44 data compression
AT+DS44=3
Activates V.44 data compression (default)
ATE<n>
Command entry Echo
This command toggles the responses, which the modem creates as reactions
from application commands (Echo), ON or OFF.
ATE0
Switch
off
Echo
ATE1
Switch on Echo (default)
AT%E<n>
Automatic
Retrain
When transmission problems occur, the modem executes a retrain procedure.
After three unsuccessful retrain attempts, the modem will hang up.
AT%E0
Retrain not allowed
AT%E1
Retrain
allowed
AT%E2
Fall back, fall forward allowed (default)
AT%E3
Fast fall back, fall forward. Is not supported by all modem types.
AT*E
Terminate remote configuration
The command
AT*E
terminates a remote configuration.
AT&F
Loading the default factory settings
The modem loads the default factory setting from the internal, nonvolatile
memory. This puts the modem into a defined basic state.
AT&F
also overwrites a
part of the S registry.
The HELMHOLZ Modem 56k small has two factory defaults
(
AT&F0,
AT&F1
).
Содержание Modem 56k small
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