Sierra Wireless MP 700 Series, Command Reference Manual

Page: 66 / 118

MP 700 Series GPS AT Command Reference
64 2130309
+CGCLASS=
<class>
+CGCLASS?
+CGCLASS=?
GPRS mobile station class
The Sierra Wireless modem operates only as a Class B device. (That is, it can
be simultaneously attached to GSM and GPRS and can transmit voice or data.)
This command exists to query the device and to conform to GSM/GPRS
specifications, but only one set value is supported.
Any attempt to set any class other than
B
returns an error.
+CGCLASS?
returns
the current class of the modem, while
+CGCLASS=?
returns the supported
class value.
Supported values
The available class setting is:
•
<class>=B
Class B
+CGDATA
[=<L2P>][,<cid>]
Note: Since the
+CGDATA
command
enters data state, any
other commands in the
AT command line are not
processed.
Note: The Sierra
Wireless modem permits
only one PDP context to
be active at a time.
Enter data state
Attempts a GPRS attach and PDP context activation. If successful, the modem
returns
CONNECT
and enters the online data state. (The
D
command can also
operate in a similar fashion. See “Make GPRS connection” on page 25.)
GPRS attachment and PDP context activation procedures may take place prior
to or during the PDP startup if they have not already been performed using the
+CGACT
and
+CGATT
commands (pages 63 and 63). If the activation is
successful, data transfer may proceed.
After data transfer is complete, and the layer 2 protocol termination procedure
has completed successfully, the modem re-enters command state and returns
the final result code
OK
. If there is an error, the V.25ter command state is re­
entered and the modem returns the final result code
NO CARRIER
or, if
enabled,
+CME ERROR
. Attach, activate and other errors may be reported.
+CGDATA=?
returns information on the supported layer 2 protocol.
Supported values
•
The Sierra Wireless modem supports only IP PDP, so the only supported
layer 2 protocol value of
<L2P>
is
PPP
. Other values will return an error.
If context activation takes place during the PDP startup, a context ID
<cid>
may
be specified in order to provide the information needed for the context activation
request (see
+CGDCONT
, page 65). If no
<cid>
is given or if there is no
matching context definition, the modem will attempt to activate the context with
default values.
Table 3-9: Command Reference Table (ASCII Alphabetic)
Command Description