Hello Phil,
>I implemented RTP in about a page of C code, not counting all of the
>UNIX/Linux system calls needed to set up multicast sockets. That's
>actually the only hard part. With RTP I just check that the next packet
>is in sequence, drop any old duplicates, and play out silence in place
>of lost packets to maintain timing, which is much more important for
>digital demodulators than for human speech.
Playing out silence in place of the lost packets is not a good idea:
it will distrurb sychronization and will bring wrong Delta Time values 
to the weak signals at demodulation. I would suggest usage of some 
averaging instead of the silence.
73 Igor UA3DJY

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