AT Command Reference
INSYS Modem 56k small EU 2.1
46
Command
Description
ATD<n>
Dialling
The INSYS Modem 56k small EU 2.1 goes off-hook and dials according to the dialling
string handed over with the
ATD
command. After dialling, the INSYS Modem 56k small
EU 2.1 tries to establish a connection. If the
ATD
command has been executed without
a dialling string, the INSYS Modem 56k small EU 2.1 goes off-hook and tries to establish
a connection to the other INSYS Modem 56k small EU 2.1 (without dialling). The behav-
iour of the INSYS Modem 56k small EU 2.1 depends on the activation of the line current
detection (refer to
ATX
command).
The execution of the
ATD
command also depends on the time when the last dialling
attempt was performed.
The INSYS Modem 56k small EU 2.1 behaves like a data modem in the mode
AT+FCLASS=0
. It attempts to connect to another data modem. This attempt is re-
peated until the waiting period that was specified in the S7 registry has expired.
If this time is exceeded, the INSYS Modem 56k small EU 2.1 hangs up and displays the
error message:
NO CARRIER
.
The INSYS Modem 56k small EU 2.1 behaves like a fax modem in the mode FCLASS=1 or
=2. It attempts to connect to another fax or fax modem. (The INSYS Modem 56k small
EU 2.1 goes into receive status HDLC V.21 channel 2, as if the command
AT+FRH
has
been executed).
The following characters may be transmitted as parameters (brackets, punctuation
marks, spaces and semicolons are ignored):
0 to 9
The digits from 0 to 9
*
The asterisk: only for tone dialling
#
The hash: only for tone dialling
A-D
The tone dialling characters A, B, C, D
P
Pulse dialing mandatory: Pulse or tone dialing is required according to
the region.
T
Tone dialing mandatory: Pulse or tone dialing is required according to
the region.