D*99, Request Gprs Service "D - Fibocom G510 User Manual

12.2.6D*99, Request GPRS Service "D"

This command enables the ME to perform the actions necessary for establishing communication between
the terminal and the external Packet Data Network (PDN).
The ITU V.25ter 'D' (Dial) commands causes the ME to enter the ITU V.25ter Online Data state and
together with the terminal, to start the specified layer 2 protocol. The ME returns CONNECT to confirm
acceptance of the command prior to entering the ITU V.25ter Online Data state. No further commands
may follow on the AT command line.
The detailed behavior after the Online Data state has been entered is dependent on the PDP type, and is
described briefly. GPRS attachment and PDP context activation procedures may take place prior to, or
during the PDP start up if they have not already been performed using the +CGATT and +CGACT
commands.
When the layer 2 protocols have terminated, either as a result of an orderly shutdown of the PDP or an
error, the ME enters the ITU V.25ter command state and returns the NO CARRIER final result code.
If <called address> is supported and provided, the ME automatically sets up a virtual call to the specified
address after the PDP context has been activated.
If <L2P> and <cid> are supported, the +CGDCONT, +CGQREQ and other such commands may then be
used in the modem initialization AT command string to set values for PDP type, APN, QoS and so on.
If <L2P> is not supported, or is supported but omitted, the ME uses a layer 2 protocol appropriate to the
PDP type.
If <cid> is not supported, or is supported but omitted, the ME attempts to activate the context using one of
the following:
• Any information provided by the terminal during the PDP start up procedure. For example, the
terminal may provide a PDP type and/or PDP address to the ME.
• A prior knowl , for example, the ME may implement only one PDP type.
Using the "Empty PDP type" No PDP address or APN is sent in this case and only one PDP context
subscription record is present in the HLR for this subscriber.
This command may be used in both normal and modem compatibility modes.
Command Syntax
Set ATD*<GPRS_SC>
[* [<called_address>] [*[<L2P>]
[*[<cid>]]]]#
The following table shows the D*99 parameters.
<Parameter>
<GPRS_SC>
G5/G6-Family AT Commands User Manual
Description
Digit string (value 99) which identifies a request to use GPRS.
Response/Action
CONNECT
or:
ERROR
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