I have a problem in all the IP phones when I receive a call from PSTN and leave the call on hold, I hear TONE instead MOH. When I make a call from IP phones to PSTN and the call is leave on hold I hear MOH work fine.
The CallManager version is 4.2(3) and h323 gateway Cisco 2821.
I follow the instructions on this document but I continue with the problem.
Any help will be apreciated