At first I was getting the error that I could not connect to the audio circuit when trying to pair my h300 headset. After reading everywhere to try to figure out the issue I tried some fiddling around of my own.

If you go to the security options for bluetooth and enable both server AND client for the headset, everything connects fine... Hope this helps.

It seems that the authentication process was not completing even after the devices have been paired.

I also got it to work with my LG 245 phone (telus canada)