Edward via tde-users wrote:

> Out of all that I tested, it included three different Sentry models.
> All three include a mic and can answer a phone call, when paired to a
> phone. Why their mics would not connect through Bluetooth on the PC, it
> must be the electronics inside those headsets, maybe they're just not
> recognizing a certain profile.
> 

But the HSP profile should be advertised and you could connect to it anyway.
The problem is usually that another profile is selected for use.

> In the Bluetooth Manager:
> 
> A2DP (default) worked fine with all headphones tested.
> 
> For the two sets of headphones that successfully work with their mics,
> it required the connection be changed to Audio Sink first, then select
> the HFP/HSP profile.

Yes - some kind of tweeking always helps. This was also my problem when I
started working on the tdebluez. It still needs some work but I changed the
setup manager to allow selecting and connecting of specific profiles.
Unfortunately I do not have too many BT devices - just few phones for
testing. I have only one active SIM card to test the phones, because you
need the SIM card there so that HF AG is advertised ...