Audio Problem with T22P using TLS / SRTP

[Marcelo]

I'm using a T22P terminal (Fw. 7.73.0.50) in a system using TLS and SRTP. I can successfuly place calls to other terminals but when T22P recieve a call (specially from smartphones) I have no audio but the caller can listen me. If i press hold twice, I start to listen the caller. This happen with the 7.73.0.50 and 7.73.40 firmware versions but not with the 7.72.0.80 version.

The problem with the 7.72.0.80 is that the T22P lost its registration after some hours and only back to register if I reboot the T22P or enter in the account configuration page and press Confirm button (without change any parameter).

Is there a workaround for solve my problem?

PS: I did some tests without the SRTP protocol (but with TLS) and the audio problem not occurs at the 7.73.0.50 firmware version.