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Should the RTP payload type (PT) field be used for multiplexing different streams?

April 26, 2017different field Multiplexing payload pt RTP Streams type Used

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Should the RTP payload type (PT) field be used for multiplexing different streams?

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It has been suggested that in some environments (such as RTP over AAL5) that lack lower-layer muxing abilities, the RTP payload type (PT) field be used to differentiate streams originating from different sources. This is a fundamentally bad idea and violates the letter and intent of the specification. It makes use of multiple PTs in a single stream difficult (see previous question). It is also unnecessary, as the SSRC was designed for distinguishing several sources.