According to RFC
2026 historic RFCs are those whose
specification has
been superceded by a more recent specification.
RFC 4612 is labeled
historic, and defines a MIME type
for T.38 over RTP, a
practice that is just now being adopted
and to be
encouraged.
Indeed, the RFC
discusses limitations of UDPTL,
but it does not
suggest deprecating its use.
In any case the
subject of the RFC is the RTP mode,
and not
UDPTL.
So why the
"historic" designation?
Y(J)S
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