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HSDPA Standard At Commands Page 37 of 60 Version 1.2
P a c k e t D o m a i n C o m m a n d ( G P R S )
1.32. UMTS packet Domain commands
This clause defines commands that a TE may use to control a MT supporting packet switched
services. Other aspects of a Packet Domain MT are described in 3GPP TS 27.060 [34].
services. Other aspects of a Packet Domain MT are described in 3GPP TS 27.060 [34].
It is anticipated that Packet Domain MTs will vary widely in functionality. At one extreme, a MT
supporting CS/PS or class-A mode of operation might support multiple PDP types as well as
circuit switched data, and use multiple external networks and QoS profiles. At the other extreme
a MT supporting only PS or class-C mode of operation might support only a single PDP type
using a single external network, and rely on the HLR to contain the PDP context definition.
supporting CS/PS or class-A mode of operation might support multiple PDP types as well as
circuit switched data, and use multiple external networks and QoS profiles. At the other extreme
a MT supporting only PS or class-C mode of operation might support only a single PDP type
using a single external network, and rely on the HLR to contain the PDP context definition.
A comprehensive set of Packet Domain-specifc commands is defined in clause 10.1 to provide the
flexibility needed by the more complex MT. The commands are designed to be expandable to
accommodate new PDP types and interface protocols, merely by defining new values for many of
the parameters. Multiple contexts may be activated if the interface link-layer protocol is able to
support them. The commands use the extended information and error message capabilities
described in this specification.
flexibility needed by the more complex MT. The commands are designed to be expandable to
accommodate new PDP types and interface protocols, merely by defining new values for many of
the parameters. Multiple contexts may be activated if the interface link-layer protocol is able to
support them. The commands use the extended information and error message capabilities
described in this specification.
For MTs of intermediate complexity, most commands have simplified forms where certain
parameters may be omitted.
parameters may be omitted.
For the simplest MTs, and for backwards compatibility with existing communications
software, it is possible to control access to the Packet Domain using existing modem-
compatible commands. A special dial-string syntax is defined for use with the D command.
This "modem compatible" mode of operation is described in subclause 10.2.
A discussion on the interaction of the AT commands, Packet Domain Management and
Packet Data Protocols, together with examples of command sequences for a number of
applications may be found in 3GPP TS 27.060 [34].
software, it is possible to control access to the Packet Domain using existing modem-
compatible commands. A special dial-string syntax is defined for use with the D command.
This "modem compatible" mode of operation is described in subclause 10.2.
A discussion on the interaction of the AT commands, Packet Domain Management and
Packet Data Protocols, together with examples of command sequences for a number of
applications may be found in 3GPP TS 27.060 [34].
Table 27. UMTS packet Domain commands
Command
Req
Description
Support
+CGDCONT Mand. Define
PDP Context
Supported
+CGDSCONT
Opt.
Define Secondary PDP Context
Supported
+CGTFT
Opt.
Traffic Flow Template
Supported
+CGQREQ
Opt.
Quality of Service Profile (Requested)
Supported
+CGQMIN
Opt.
Quality of Service Profile (Minimum acceptable)
Supported
+CGEQREQ
Opt.
3G Quality of Service Profile (Requested)
Supported
+CGEQMIN
Opt.
3G Quality of Service Profile (Minimum acceptable)
Supported
+CGEQNEG
Opt.
3G Quality of Service Profile (Negotiated)
Not supported
+CGATT
Opt.
PS attach or detach
Supported
+CGACT
Opt.
PDP context activate or deactivate
Supported
+CGCMOD
Opt.
PDP Context Modify
Supported
+CGDATA
Opt.
Enter data state
Supported
+CGCLOSP
Opt.
Configure local Octet Stream PAD parameters
Not supported
+CGPADDR
Opt.
Show PDP address
Supported
+CGAUTO Opt.
Automatic response to a network request for PDP context
activation
activation
Not supported