User's Manual

D - Automatic Dialing and Dialing Parameters
The D command instructs the modem to go on-line and to dial. If this
command is entered without parameters, the modem will go on-line in
Originate mode. The following characters are authorized in the dialing
sequence:
0 - 9 The digits of the telephone number
P, T In the Dial command, these parameters switch to pulse-dialing (P) or
to tone-dialing (T) until the other parameter is entered. The standard
setting is tone-dialing.
W Dialing tone recognition. When this parameter is entered, the modem
will not continue dial until it has recognized the sign that the line is
free. This is an advantage in branch exchanges, where it is not
always possible to guarantee immediate access to a line.
, Dialing pause (2 sec). This command may not be used in the dialing
sequence when the modem is supposed to wait for a new dial-tone.
The W-Parameter must be used in this case.
A-D,*,# Additional characters when tone-dialing
S=n Dialing number which is stored with &Zn
! Call exchange by Flash
;H Modem as automatic dialing device. Here, the dialing sequence is
terminated by a semi-colon, followed by the H command. The
modem goes off-line after dialing and you can take over the
conversation using a telephone. The handset must be lifted during
the dialing process.
Example of how to set up a Dial Command
ATD T0, 02212971
With this, a private automatic branch exchange using tone-dialing dials zero, in
order to obtain an exchange line. The modem then waits two seconds to dial
the rest of the telephone number.
Example of the Automatic Dialing Function
ATD T0, 02212971;H
If you lift the handset during the dialing process, you can take over the
connection yourself.
=> Where appropriate, ask the manufacturer of your private automatic
branch ex-change what specific features need to be taken into account in the
dialing procedure
=> If the handset is not replaced after the data transmission has been
completed, the connection remains made and you will continue to pay for this!
AT COMMANDS: DATA MODEM 2-5