Siemens M1 - Manual (Page 24)

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GSM M1 Module, English: A24859-N4000-A100-1-7677 gsm-m1-e.fm
Technical reference section
6.3.96
This command allows you to redial the last telephone number that you dialed, regard-
less of whether the last dialing attempt was successful.
Example:
Enter: ATD123456789 GSM module dials 123456789
GSM module: BUSY The number is busy.
Enter: ATDL
GSM module: Redials 123456789.
The AT%Dn command allows you to activate and deactivate automatic dialing of the
telephone number stored in telephone number memory "0". The number is dialed if the
computer sets the DTR control line connected to the COM interface to ON.
Example:
Enter: AT&Z0=123456789 Stores the telephone no. "123456789"
in telephone number memory "0".
GSM Data_Module: OK Telephone number has been stored.
Enter: AT%D1 Activates DTR dialing.
GSM module: OK Command has been executed.
DTR is OFF
DTR switches ON
"123456789" is dialed automatically.
DTR switches OFF GSM module goes on-hook.
ATDL - Redial last telephone number used
AT%Dn - Automatic dialing with DTR
AT%Dn [n=0..1]
Option Result
AT%D0 Deactivates automatic DTR dialing.
AT%D1 Activates automatic DTR dialing if DTR switches from OFF to ON;
dials the telephone number "x" that was stored in telephone number
memory "0" by means of the AT&Z0=x command.