BC127HD to BC127HD Bi-directional audio link

Hello,

I am looking to use two BC127HD modules to create a wireless bi-directional audio link. For proof of concept, I am using two BC127HD demo boards running Melody V6.1.5.

After the devices are paired, I type the following into Board #1’s terminal window:
OPEN AGHFP
CALL 12 INCOMING 1234

In Board #2’s terminal window:
CALL 13 ANSWER

The headphone output from board #2 is just static (i.e. white noise).
The headphone output from board #1 is distorted, but can be correlated to the line input of board #2.

Can anyone provide a configuration script for setting up a bi-directional audio link between two modules?

Regards,
KC

I updated firmware to v7.3 and bi-directional audio works.