Multi-Tech Systems GPRS (MTMMC-G) User Manual
Chapter 15 – GPRS Commands
Multi-Tech Systems, Inc. Wireless GSM/GPRS AT Commands (Document Number S000293I)
156
PDP Context Activate or Deactivate +CGACT
Description:
The execution command activates or deactivates the specified PDP context (s). After the command has
completed, the modem remains in V.25ter command state. If any PDP context is already in the
requested state, the state for that context remains unchanged.
completed, the modem remains in V.25ter command state. If any PDP context is already in the
requested state, the state for that context remains unchanged.
If the requested state for any specified context cannot be achieved, an ERROR or +CME ERROR
response is returned. Extended error responses are enabled by the +CMEE command.
response is returned. Extended error responses are enabled by the +CMEE command.
If the modem is not GPRS attached when the activation form of the command is executed, the modem
first performs a GPRS attach and them attempts to activate the specified contexts. If the attach fails
then the modem responds with ERROR or, if extended error responses are enabled, with the
appropriate failure-to-attach error message.
first performs a GPRS attach and them attempts to activate the specified contexts. If the attach fails
then the modem responds with ERROR or, if extended error responses are enabled, with the
appropriate failure-to-attach error message.
If no <cid>s are specified the activation form of the command activates the first activable defined
contexts. If no <cid>s are specified the deactivation form of the command deactivates all active
contexts.
contexts. If no <cid>s are specified the deactivation form of the command deactivates all active
contexts.
One PDP context can be activated at the same time.
The read command returns the current activation states for all the defined PDP contexts.
The test command is used for requesting information on the supported PDP context activation states.
Note: See “Full GPRS AT Command Examples” later in this chapter.
Note: See “Full GPRS AT Command Examples” later in this chapter.
Values:
<state> Indicates the state of PDP context activation
0 Deactivated
1 Activated
Other values are reserved and will result in an ERROR response to the execution command.
1 Activated
Other values are reserved and will result in an ERROR response to the execution command.
<cid> A numeric parameter which specifies a particular PDP context.
Before a context can be activated, the modem must be attached to the GPRS network by
performing an automatic GPRS attach.
performing an automatic GPRS attach.
Note: If a GPRS PPP session is already running, the setting of a CSD (GSM data call) is not
supported.
Syntax:
Command Syntax: AT+CGACT
Command
Possible Response(s)
AT+CGACT=[<state>
[,<cid>[,<cid>[,…]]]]
[,<cid>[,<cid>[,…]]]]
OK
ERROR
ERROR
AT+CGACT?
+CGACT: <cid>, <state>
[<CR><LF>+CGACT: <cid>, <state>
[...]]
OK
[<CR><LF>+CGACT: <cid>, <state>
[...]]
OK
AT+CGACT=?
+CGACT: (list of supported <state>s)
OK
OK
AT+CGACT=1,1 OK
AT+CGACT? +CGACT:
AT+CGACT? +CGACT:
1,1
OK
AT+CGACT=? +CGACT:
(0-1)
OK