User guide

Developers guidelines | AT commands
86 June 2010
Unsolicited result codes
+BVRA Bluetooth voice recognition activation indication
+VGM Gain of microphone indication
+VGS Gain of speaker indication
Description: Unsolicited result code used to notify the HF when the voice recognition
function in the phone has been terminated autonomously. This result code
is activated by AT+BVRA.
Unsolicited result
code: +BVRA: <vrect>
Parameter:
<vrect>:
<vrect> Description
0 Voice recognition is disabled in the phone
1 Voice recognition is enabled in the phone
Description: Unsolicited result code issued by the phone to set the microphone gain of
the HF. <gain> is a decimal numeric constant, relating to a particular
(implementation dependent) volume level controlled by the HF.
This result code is activated by AT+VGM.
Unsolicited result
code: +VGM: <gain>
Note: Due to the small inconsistency between the GSM 07.07 standard and the
current headset specification (Specification of the Bluetooth System;
Profiles, v1.1, Part K:6, Headset Profile.), the HF will also accept the “=”
symbol in place of “:” as a valid separator for this unsolicited result code.
Parameter:
<gain>:
<gain> Description
0–15 0 – Minimum gain
15 – Maximum gain
Description: Unsolicited result code issued by the phone to set the speaker gain of the
HF. Parameter <gain> is a decimal numeric constant, relating to a particu-
lar (implementation dependent) volume level controlled by the HF.
This result code is activated by AT+VGS.
Unsolicited result
code: +VGS: <gain>