java - Is there an AT command to direct audio (voice call) between two devices connected via bluetooth? -

java - Is there an AT command to direct audio (voice call) between two devices connected via bluetooth? -

i have 2 devices connected via bluetooth. initiate voice phone call device (programmatically app) device, after connecting using handsfree sound gateway.

however, able initiate phone call , not hear other end or send voice 1 time phone call established. realize there more must this. unable find out is. perhaps there @ command initiating phone call , routing sound bluetooth connected handset? or other way?

my coding attempts far described here in question : how initiate phone call hf through ag via handfree sound gateway in android?

any help appreciated.

there no @ command start sco link (audio link) on bt.

a sco link started in android using audiomanager.startbluetoothsco()

have not used myself can't help more this.

have connect bluetooth hf connection between 2 android phones? tought supported ag role not hf. isn't spp connection using?

java android bluetooth android-bluetooth bluetooth-sco