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HC15 AT Command Set

10. GPRS Commands

HC15_ATC_V01.001 Page 132 of 234 2/16/07

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10. GPRS Commands

This chapter describes AT commands that a TE (Terminal Equipment, e.g. an application running on a controlling

PC) may use to control the HC15 acting as GPRS Mobile Termination (MT). Please use chapter "Using GPRS

AT commands (Examples)" as a first guidance.

10.1 AT+CGATT PS attach or detach

The execution command is used to attach the MT to, or detach the MT from, the Packet Domain service. After

the command has completed, the MT remains in V.25ter command state. If the MT is already in the requested

state, the command is ignored and the OK response is returned. If the requested state cannot be achieved, an

ERROR or +CME ERROR response is returned.

Any active PDP contexts will be automatically deactivated when the attachment state changes to detached.

The read command returns the current Packet Domain service state.

The test command is used for requesting information on the supported Packet Domain service states.

Syntax

Parameter Description

Indicates the state of PS attachment.

(P)

detached

[1] attached

Test Command

AT+CGATT=?

Response(s)

+CGATT: (list of supported <state>s)

Read Command

AT+CGATT?

Response(s)

+CGATT: <state>

Write Command

AT+CGATT=[<state>]

Response(s)

ERROR

+CME ERROR

Reference(s) PIN USB0-MDM USB0-APP Last

3GPP 27.007 + + + -

<state>

(num)

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