Siemens MC55 - Manual (Page 247)

MC55 AT Command Set
10.3 AT+CGATT
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MC55_ATC_V01.05 Page 247 of 469 2/10/04
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10.3 AT+CGATT GPRS attach or detach
Syntax
Command Description
The test command is used for requesting information on the supported GPRS service states.
The read command returns the current GPRS service state.
The write command is used to attach the MT to, or detach the MT from the GPRS service. After the command
has completed, the MT remains in V.25ter command state. If the MT is already in the requested state, the com-
mand is ignored and the OK response is returned. Any active PDP contexts will be automatically deactivated
when the attachment state changes to detached.
If the MT is not able to attach for more than 5 minutes, command returns with "ERROR" or "+CME ERROR:
unknown", but MT is still trying to attach.
If the MT is not able to detach for more than 1 minute, command returns with "ERROR" or "+CME ERROR:
unknown", but MT is still trying to detach. If an attach is issued during a running detach, command returns with
"ERROR" or "+CME ERROR: unspecified GPRS error".
Test Command
AT+CGATT=?
Response(s)
+CGATT:
(list of supported
<state>
s)
OK
Read Command
AT+CGATT?
Response(s)
+CGATT: <state>
OK
Write Command
AT+CGATT=
[
<state>
]
Response(s)
OK
ERROR
+CME ERROR
PIN ASC0 ASC1 MUX1 MUX2 MUX3
% % % % % %
Reference(s)
GSM 07.07