[Asterisk-video] Instable h324m outbound calls

[Sven Brandau]

Hi Experts!

After playing some hours with outgoing calls only 50% of the calls are successful. The
connection with the phone is established, but the call will be aborted after ~ 15 sec
without any audio or video (Motorola K3). Sometimes the phone is hanging in an endless loop,
no video, no audio, but the call will not aborted (Nokia N73).

I've traced the incoming h.223 packets and found some errors. E.g.: (from h245_in.log)


E1 4D 00 00 00 E1 4D 00 00 00 E1 4D 00 00 00 E1 4D 00 00 00 E1 4D 00 00 00 E1 4D 00 00 00 E1 4D
            flg            flg            flg            flg            flg            flg
00 00 00 E1 4D 00 00 00 E1 4D 00 77 4D AB 80 C0 F7 0D AB 60 00 87 8D AB 18 20 A7 2D AB 48 18 7F
                     flg       ^^^^^^^^^^^^^^^^^
D1 AB 68 38 0F 91 AB 96 08 F3 41 AB 26 A8 CB A1 AB 8E B6 3B 99 AB E9 12 AA F2 5F 22 A8 73 C3 AB


The byte sequence from 00 77 4D onwards seems to be corrupt.

Is anyone here who can explain that? Is this the normal thing of corrupting data over the air?
But the protocol should be able to work over error prone channels.

In case of incoming calls everything works fine.

Regards,
Sven