TPKT in H.225.0

[Tom-PT Taylor]

TPKT is a necessary addition to TCP-based messaging, to provide advance
delineation of individual messages.  TCP by itself doesn't do this very
well, since it is stream-oriented.  See RFC 1006 as you indicate.

> -----Original Message-----
> From: Derks, Frank [SMTP:F.Derks at PBC.BE.PHILIPS.COM]
> Sent: Monday, February 01, 1999 12:31 PM
> To:   ITU-SG16 at MAILBAG.INTEL.COM
> Subject:      TPKT in H.225.0
>
>
> I am trying to make some sense out of H.225.0. Section 6.1 (in versions 2
> and 3) refers twice to TPKT: "In IP implementations as outlined in
> Appendix
> D, this packet is defined by TPKT". Appendix D shows an unnumbered figure
> that indeed has the acronym "TPKT" in it. However, from this it is still
> not
> quite clear what TPKT is. What is the purpose of mentioning it 6.1 if it
> is
> not specified/explained anyway? If TPKT is nothing else than one (whole)
> Q.931/H.245 PER encoded message (pre-pended with the relevant Q.931 fields
> in the case of "Q.931") then the recommendation could be less ambiguous
> about it. The reference to the appendix leads one to believe that further
> inofrmation can be found there, whereas the preceding text already
> explains
> what TPKT is.
>
> Furthermore, the list of abbreviations does not list it either.
>
>
> Regards,
>
> Frank
>
>
> P.S.
>
> Does this "TPKT" have anything to do with "TPKT" as used in RFC1006?
>
>
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