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I am working with an RTP protocol H.323, So would it possible to ignore the payload type (PT) ?

+3 votes
posted Mar 21, 2014 by Yogeshwar Thakur

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1 Answer

+4 votes

An application must never just play a packet without inspecting its payload type, even if a single payload type has been negotiated via H.245 or similar protocols. New mechanisms, including

  • transmission of DTMF digits (RFC 2833),
  • comfort noise indication,
  • forward error correction using redundant data,
  • switching of encodings to take into account network conditions

may conveniently use the PT to indicate special packets, which an end application can ignore, if desired, ensuring backward compatibility. But this assumption is violated if an application blindly plays back all packets regardless of PT.

Also, in multicast environments, it is unlikely that every sender will use the same payload type.

answer Mar 21, 2014 by Hiteshwar Thakur
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+1 vote

Either the device should drop that AVP with port 0 or It should be handled at OCS level.

+2 votes

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I am bit confused here. I have just started to reading this and had a look at header and found that In header part there is no length field. the protocols i am bit aware GTP, Diameter they have length field present.

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