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Chapter 9 – Supplementary Service Commands

Multi-Tech Systems, Inc. AT Commands for EDGE (E1) Modems (S000474A) 131

9.4 AT+CAOC Advice of Charge Information

Description: The Execute command returns the current call meter value. The write command sets the

Advice of Charge supplementary service function mode.

Syntax: Test Command: AT+CAOC=?

Response: +CAOC: (list of supported<mode>s)

Read Command: AT+CAOC?

Response: +CAOC: <mode>

Exec Command: AT+CAOC

Response: ERROR

+CME ERROR: <err>

If <mode>=0, TA returns the current call meter value:

+CAOC: <ccm>

Write Command: AT+CAOC=[<mode>].

Response: ERROR

+CME ERROR: <err>

If <mode>=0, TA returns the current call meter value.

Parameter:

<mode>

0 query CCM value

<ccm>

Three bytes of the current CCM value in hexadecimal format (e.g., “00001E” indicates decimal value 30); bytes

are similarly coded as ACMmax value in the SIM 000000-FFFFFF.

Notes:

• This command is PIN protected.

• This command is supported in airplane mode.

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