In some of the Smart watches like pebble and meta watch,it is possible to accept and reject calls on the smart watch.how the call related info be transferred between iPhone and bluetooth device using MAP or PBAP. I would like to accept the call from the bluetooth device similar to earphone where I can accept the call via bluetooth.
Is there any legitimate api or any pointers to accomplish this ?
EDIT
Metawatch has inbuilt microphone and speaker and it implements HFP and PBAP.If smart watch has in built microphone and speaker and if it implements HFP,calls can be accepted from the watch,but Pebble does not have in built microphone and speaker. Still Pebble is able to accept the call and route it to headset. Pebble supports HFP,MAP,AVRCP and SPP on iOS and it is an MFi.How can the same be implemented in an app?