Symptom:
Reverted Call Focus Priority not working [Highest Priority]

Conditions:
1. Launch Phone App and Make a call from Endpoint A to Endpoint B
2. Answer the call on Endpoint B
3. Place the call on hold from Endpoint A
4. Leave the call on hold for more than 5 seconds
5. Initiate call from Endpoint C to A.
6. When getting hold reversion notifications on Endpoint A, then it is having another incoming call.
7. Go off-hook/ press Speaker Button. 
6. End the call