Multitech MTCMR-H User's Guide download pdf (Page 88)

Chapter 3 – Supported GSM/WCDMA AT Commands

High Speed HSPA-H4 AT Commands Reference Guide (Document S000483A) 88

+CGATT GPRS Attach or Detach

Description: This command is used to attach the modem to, or detach the modem from, the GPRS

service. After the command has completed, the modem remains in V.25ter command state.

If the modem is already in the requested state, the command is ignored and the OK

response is returned.

Any active PDP contexts will be automatically deactivated when the attachment state

changes to detached.

Syntax:

Command Responses

Action Command:

AT+CGATT=<state>

Read Command:

AT+CGATT?

+CGATT: <state>

Test Command:

AT+CGATT=?

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

Values: <state> State of GPRS Attachment

0 Detached

1 Attached

2 Combined detach (GPRS and GSM detach in the same network request)

Parameter Storage: None.

Examples:

Command Responses

T+CGATT=1 OK

T+CGATT? +CGATT: 1

T+CGATT=? +CGATT: (0-2)

+CGCLASS GPRS Mobile Station Class

Description: The set command is used to set the modem to operate according to the specified GPRS

mobile class.

Syntax:

Command Responses

Action Command:

AT+CGCLASS=<class>

Read Command:

AT+CGCLASS?

+CGCLASS: <class>

Test Command:

AT+CGCLASS=?

+CGCLASS: (list of supported <class>s)

Values: <class> GPRS Mobile Class (in descending order of functionality)

B Class B

CG Class C in GPRS only mode

CC Class C in circuit switched only mode (lowest)

Parameter Storage: <class> is stored in EEPROM without

using AT&W.

Examples:

Command Responses

T+CGCLASS=? +CGCLASS: (“CG”,”CC”,"B")

T+CGCLASS=”CC”

Note: Enter GMS mode

T+CGCLASS? +CGCLASS: (“CC”)

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