Specifications

3GPP
3GPP TS 27.007 V6.3.0 (2003-
06)
13
6
Release 6
9yyyy M-xxxx
Other values are reserved and will result in an ERROR response
<cid>: a digit string which specifies a particular PDP context definition (see the +CGDCONT and +CGDSCONT
commands).
Implementation
Optional if the +CGDATA command is supported. If the D command is provided, then support for
<called_address>, <L2P> and <cid> are optional. If they are not supported but values are provided by the TE,
the values shall be ignored and this shall not constitute an error.
10.2.1.2 Request Packet Domain IP service 'D'
Table 124: D command syntax
Command
Possible Response(s)
D*<GPRS_SC_IP>[*<cid>[,<cid>[,…]]]#
CONNECT
ERROR
Description
This command causes the MT to perform whatever actions are necessary to establish communication between the TE
and the external PDN.
The V.250 'D' (Dial) command causes the MT to enter the V.250 online data state and, with the TE, to start the
specified layer 2 protocol. The MT shall return CONNECT to confirm acceptance of the command prior to entering the
V.250 online data state. No further commands may follow on the AT command line.
The detailed behaviour after the online data state has been entered is described briefly in clause 9, for IP, of 3GPP TS
27.060[34]. 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 +CGATT and +CGACT commands.
When the layer 2 protocol has terminated, either as a result of an orderly shut down of the PDP or an error, the MT shall
enter V.250 command state and return the NO CARRIER final result code.
If <cid> is supported, its usage shall be the same as in the +CGDATA command. The +CGDCONT, +CGQREQ, etc.
commands may be used in the modem initialization AT command string to set values for for PDP type, APN, QoS etc.
If <cid> is not supported or is supported but omitted, the MT shall attempt to activate the context using:
(a) any information provided by the TE during the PDP startup procedure, e.g. the TE may provide a PDP type
and/or PDP address to the MT,
or, (b) a priori knowledge, e.g. the MT may implement only one PDP type,
or, (c) using the 'Empty PDP type' (TS 24.008). (No PDP address or APN shall be sent in this case and only one
PDP context subscription record shall be present in the HLR for this subscriber.)
This command may be used in both normal and modem compatibility modes.
NOTE. The dial string conforms to the syntax specified in 3GPP TS 22.030[19].
Defined Values
<GPRS_SC_IP>: (GPRS Service Code for IP) a digit string (value 98) which identifies a request to use the GPRS
with IP (PDP types IP and PPP)
<cid>: a digit string which specifies a particular PDP context definition (see +CGDCONT command).
Implementation
Optional if the +CGDATA command is supported. If the D command is provided, then support for <cid> is optional.
If it is not supported but a value is provided by the TE, the value shall be ignored and this shall not constitute an error.