What steps will reproduce the problem? 1. Install BTstack for uses with external hardware 2. Note that car can no longer pair with device 3. Note that car or laptop cannot find iOS device as "discoverable".

What is the expected output? What do you see instead? Would like to have a method to put BTstack iOS device in discoverable mode and pair with HFP devices.

What version of the product are you using? On what operating system? iOS 5.0.1, iPhone 4S, BTstack 0.5-1653

Please provide any additional information below. Aside from all the wonderful things BTStack brings to the table, after hours of research it seems there is no way to simply pair with bluetooth headsets or automobiles. Any solution?

Adding HFP to BTstack on iOS requires two parts: implementing HFP and it's audio transmission, integrating the audio streams with iOS. While the first should be straight forward, the second is probably complicated.