10.0 General

27.0073GPPAT command set for User Equipment (UE)Release 18TS

This clause defines commands that a TE can use to control a MT supporting packet switched services.

Packet Domain MTs vary widely in functionality. At one extreme, an advanced MT can support multiple PDP types, and use multiple external networks and QoS profiles. At the other extreme, an MT can 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-specific 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 can 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 can be omitted.

For certain simple MTs, and for backwards compatibility with existing communications software as defined in 3GPP TS 23.060 [47], 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 clause 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 some applications can be found in 3GPP TS 23.060 [47] and 3GPP TS 27.060 [34].