[VOIPSEC] RTP or SRTP inside UDP - how understand?

[Colin Perkins]

On 27 Mar 2006, at 20:31, Sergey Vointsev wrote:
>> The more pressing question would be: if you're receiving an SRTP  
>> stream,
>> why don't you know about it?
>
> Of course I know.
> But I heard somewhere, that if some gateway in the net receives
> something, that it considers to be RTP packet with some known codec
> used, it can transcode it to some other codec. Am I misinformed? (yes,
> I'm novice to VoIP :)

You can't reliably do this without access to the signalling information.

Colin