Missing tone Busy / 486

[phavel]

Hello,

If the called party fails to answer the call, in handset is not busy tone. And the display status of the call status is show very short time.

At this point, nothing is heard and the status information (486 / Busy here) appears on the screen for about 2 seconds. When I have a phone beside my ear, I can not see the display and I can not see the call status. After a few seconds the message is gone, and it is early because I can not register the status.

Thanks for the repair.