Insys Modem 56k small INT 2.0 11-02-01-01-43.003 Benutzerhandbuch
Produktcode
11-02-01-01-43.003
INSYS Modem 56k small INT 2.0/USB 1.0
Functions
June 06
37
5.10.2 Going off-hook on account of a telephone con-
nected in series
If a telephone connected in series goes off-hook during an
existing modem connection, the modem will immediately
terminate the connection.
The telephone is connected to the line and receives a dialing
tone.
In the registry S86, the value is set to 25.
When the phone connection is terminated, the modem will
not establish a new connection.
existing modem connection, the modem will immediately
terminate the connection.
The telephone is connected to the line and receives a dialing
tone.
In the registry S86, the value is set to 25.
When the phone connection is terminated, the modem will
not establish a new connection.
Changing the loop voltage to detect the function – Off-hook
on account of a telephone connected in series (U2) – can be
set with the help of AT commands.
on account of a telephone connected in series (U2) – can be
set with the help of AT commands.
Note:
The detection starts immediately after the
handset is picked up. To access the exchange,
simple analogue phone systems often connect
the modem per contact directly with the ex-
change, which results in a strong change or po-
larity reversal of the loop voltage. For some
analogue phone systems, this may result in an
erroneous detection. Off-hook detection is
therefore not recommended in connection with
analogue phone systems.
handset is picked up. To access the exchange,
simple analogue phone systems often connect
the modem per contact directly with the ex-
change, which results in a strong change or po-
larity reversal of the loop voltage. For some
analogue phone systems, this may result in an
erroneous detection. Off-hook detection is
therefore not recommended in connection with
analogue phone systems.
U2
Loop voltage prior
to the connection.
to the connection.
Time
Voltage
Loop voltage af-
ter a telephone
connected in se-
ries goes off-
hook.
ter a telephone
connected in se-
ries goes off-
hook.
ATS86=25
AT-TTE=U1, U2, U3