CSSN 900 Specifications download pdf (Page 159)

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SIM900_AT Commands Manual_V1.07 159 2012.12.10

z <esn> <sesn> <moden> values of read command are related to channel

<micn>specific.

6.2.48 AT+CAAS Control Auto Audio Switch

AT+CAAS Control Auto Audio Switch

Response

+CAAS: (0-2)

Test Command

AT+CAAS=?

Parameter

See Write Command

Response

+CAAS: <mode>

Read Command

AT+CAAS?

Parameter

See Write Command

Response

This parameter setting determines whether or not the audio channel will be

switched automatically to the corresponding channel in case of headset

attaching or detaching.

If error is related to ME functionality:

+CME ERROR: <err>

Write Command

AT+CAAS=<mo

de>

Parameter

<mode>

0 Disable automatic audio channel switch function, the headset

HOOK function is disabled;

1 Enable automatic audio channel switch function, the headset

HOOK function is enabled;

2 Disable automatic audio channel switch function, the headset

HOOK function is enabled.

Reference Note

z For this command, please refer to actual model.

z The headset detection is still worked when <mode> is set to 0. In other

word, if "AT+CEXTHS=1" is set, the unsolicited event code

(indicating whether the headset has been attached/detached) will be

sent to the terminal.

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CSSN 900 Specifications Page 159