Multi-Tech Systems MMCModem GPRS (MTMMC-G) - Manual (Page 168)

Chapter 15 – GPRS Commands
Multi-Tech Systems, Inc. Wireless GSM/GPRS AT Commands (Document Number S000293I) 168
GPRS Parameters Customization +WGPRS
Description: This command modifies some of the GPRS parameters:
•
The ATTACH-STATUS (the modem doesn’t automatically make a GPRS attachment after
initialization)
• The PDP-INIT-STATUS (activate automatically some defined PDP Contexts after initialization)
and
• The user-defined multislot class. This parameter represents the GPRS class chosen by the user
to perform power saving (by reducing TX [or uplink] time slots).
In addition, this command allows you to:
• Automatically set some defined PDP contexts to be activated after initialization.
• Set some parameters for the PALM
® OS software: PPP Silent Mode (PPP waits for PPP Client
to start the dialog) and Slow CONNECT due to the delay of the processing of PALM
® OK, the
CONNECT is sent one second after the dialing command request.
Important Note: The modem must be rebooted to activate the new setup except for 3, 5, 6
and 7 (refer to the Values section).
Values: A numeric parameter which specifies a GPRS parameter:
0 ATTACH-STATUS (the modem doesn’t automatically make a GPRS attachment after init)
1 PDP-INIT-STATUS (declare some PDP contexts liable to be activated automatically after
initialization by =2)
2 Set “ACTIVABLE” automatically after init a define PDP context
3 PPP silent mode
4 Definition of the GPRS multislot class
5 Slow CONNECT for PALM
® OS
6 PPP Filtering
7 Automatic GPRS roaming inter-operator: if activated, the modem automatically re-
attaches itself to the network and reactivates its PDP context by changing the operator
when reaching border areas.
Notes:
• If =0, 1, 3, 4, 5, 6 or 7 and will be ignored.
• If =0, 1, 2, 3, 5, or 6 will be ignored.
• If =4 and will be ignored. The modem must be restarted to
take the modification into account.
•
PPP Filtering is a test-purpose functionality. It avoids sending some OS-specific frames on
the radio link, for accurate transfer rate measurements.
A numeric parameter that controls the operation defined by if it is equal to 0, 1, 2
or 3
0 Operation Off (disabled)
1 Operation On (enabled)
(PDP Context Identifier). A numeric parameter that specifies a particular PDP context
definition. The parameter is local to the DTE-modem interface and is used in other PDP
context-related commands. The range of values is 0 to 4.
GPRS multislot class number. It may be loser than the maximum possible class. Possible
values are 2, 8, 10, 12. Note that the range of values is dependent upon the modem.
Multislot
Class Maximum
Number of Slots
Minimum Number of
Slots
Type
of MS
Rx Tx Sum T
ta
T
tb
T
ra
T
rb
2
8 2
4 1
1 3
5 3
3 2
1 3
2 1
1 1
1
10 4 2 5 3 1 2 1 1
12 4 4 5 2 1 2 1 1
Notes:
When the modem is set in CG class, the modem always makes an automatic GPRS attachment after
initialization. AT+WGPRS? always gives +WGPRS: 0,0 for the parameter 0.
The default value for mode 7 is 0. In this case, no automatic GPRS reconnection to a new operator is done
when reaching border areas.