T48G Phones not disconnecting on Auto Answer for Intercom

[Flora_Yealink]

Hi,
from your description , you meant the scenario is like below?
Two Yealink T48 locate in two locations,these two phone register the same account for example 100
Your virtual server make intercom to 100, both 100 will automatically answer the call.
the virtual server disconnect the call, normally these two phones should end the call and back to idle states, but actually these phones are still shows in the call .
right ?
How often the issue happen ? every call ?
have you checked whether the server send information to these two phones to end the call?
if there any brand phone can work well in this scenario ?

Best Regards!
Flora