Re: iOS microphone blocked while CDC is connected.

Posted by Karlis on Sep 23, 2016; 9:17pm
URL: http://bluesaab-forum.90.s1.nabble.com/iOS-microphone-blocked-while-CDC-is-connected-tp668p691.html

You might need to change SD and SK settings as well to enable HFP Bluetooth profile. Otherwise during connection negotiation between BlueSaab and your phone, they will default to A2DP which disables microphone control.

The SD and SK setting should be "16" in that case.