Alternatively, if the implementation considers the use of this
specification mandatory and the "defined by profile" field does not
match one of the values defined above, it SHOULD stop the processing
of the RTP packet and report an error for the RTP stream.
Why is this not a MUST stop ? If it is mandatory, what is an example
where it can continue processing an RTP packet without the mandatory requirement?
Why is this not a MUST stop ? If it is mandatory, what is an example where it can continue processing an RTP packet without the mandatory requirement?