Siemens M20 Terminal Technical Description page 31

Siemens Information and Communication Products
Execute command Response
When <n> is a call string
ATD<n>[;]
TA attempts to set up an outgoing call.
If error is related to ME functionality
+CME ERROR: <err>
If no dialtone and (parameter setting X=2 or X=4)
NO DIALTONE
If busy and (parameter setting X=3 or X=4)
BUSY
If a connection cannot be set up
NO CARRIER
If successfully connected and non-voice call
CONNECT<text>
TA switches to data state.
When TA returns to command mode after call release
OK
If successfully connected and voice call
OK
Parameter
<n>
dialling digits:
V.25ter modifiers:
GSM modifiers:
Maximum sum of dialling digits and GSM modifiers in <n>: 20
Note: leading "+" is not counted as dialling digit. E.g. +...20... characters
If <n> is missing: default value of <n> is last dialled number
<;>
Version 8 dated 15.03.00
Note: <text> only if parameter setting X>0
string of dialling digits and optionally V.25ter and GSM modifier characters:
0-9
*, #
+
A, B, C
(comma), T, P,!, W, @
I, #31#
i, *31#
G, g
voice call, return to command state
AT command interface
only for supplementary service call
only as first character for call
they are ignored
they are ignored
CLIR invocation
CLIR suppression
CUG info, uses set with command +CCUG
A
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