Siemens M1 - Manual (Page 23)

22
gsm-m1-e.fm GSM M1 Module, English: A24859-N4000-A100-1-7677
Technical reference section
26.2.96
In order to dial a telephone number, enter the ATD command followed by the number.
Example:
Enter: ATD 0199341
GSM module Dials the telephone number 0199341.
and returns: CONNECT 2400
As soon as the module detects the carrier for the distant station, it returns the CON-
NECT result code. Data transfer can now begin.
• A dial string comprises digits from "0" to "9" (the telephone number), letters "A" to
"C" and the special dialing characters "i","+" and ";".
i This character must be located between the ATD command and the
telephone number (ATDix) and causes the GSM module to switch to
ISDN mode for this call.
+ This character must be located at the beginning of a dial string and
serves to access the international exchange of a GSM network.
Example:
You are in Sweden and wish to set up a connection to Munich.
Dial:
ATD+4989<telephone number>
• A dial string must contain no more than 30 characters. A longer string will not be
dialed.
• A command line including the dial string must not exceed 39 characters. Although
longer command lines are displayed, they are rejected in their entirety.
Example:
ATD0045890235168338
This dial string comprises 16 characters. The command line on the screen contains
19 characters.
ATD - Dial a telephone number
Valid dial strings