[Asterisk-video] Instable h324m outbound calls

[Klaus Darilion]

Sven Brandau schrieb:
> 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?

Corrupted data may happen. But it should also happen for incoming 3G calls.

> But the protocol should be able to work over error prone channels.

It should. But of course it depends on the implementation in libh324m.

> In case of incoming calls everything works fine.


That's the strange part :-(

klaus