Specifications

Chapter 11 – GPRS Commands
Multi-Tech Systems, Inc. AT Commands for EDGE (E1) Modems (S000474A) 187
Chapter 11 – GPRS Commands
This chapter describes AT Commands that a TE (Terminal Equipment; e.g., an application running on a controlling
PC) may use to control the Multi-Tech wireless modem acting as GPRS Mobile Termination (MT). Please use “Using
GPRS AT Commands (Examples)” as a first guidance.
11.1 AT+CGACT PDP Context Activate or Deactivate
Description: The test command is used for requesting information on the supported PDP context activation
states.
The read command returns the current activation states for all the defined PDP contexts.
The write command is used to activate or deactivate the specified PDP context(s). After the
command has completed, the MT remains in V.250 command state. If any PDP context is
already in the requested state, the state for that context remains unchanged. If the MT is not
GPRS attached when the activation form of the command is executed, the MT first performs a
GPRS attach and then attempts to activate the specified contexts. If no <cid>s are specified the
activation/deactivation form of the command activates/deactivates all defined contexts.
Syntax: Test Command: AT+CGACT=?
Response: +CGACT: (list of supported <state>s)
OK
Read Command: AT+CGACT?
Response: +CGACT: <cid>, <state>
[+CGACT: <cid>, <state>]
...
OK
Write Command: AT+CGACT=[<state>[, <cid>[, <cid>]]]
Response: OK
ERROR
+CME ERROR: <err>
Parameters:
<state>
Indicates the state of PDP context activation.
0 deactivated
1 activated. Default. This is the default value if the parameter is omitted (1 will be assumed).
<cid>
PDP Context Identifier is a numeric parameter which specifies a particular PDP context definition. The parameter
is local to the TE-MT interface and is used in other PDP context related commands.
1...2
Notes:
• ATH will deactivate any PDP context.
• This command is PIN protected.
• This command is supported in airplane mode.