🚀 go-pugleaf

gutman@nosc.mil (Lew Gutman) writes:

>I am looking for information on X.25 header compression for slow links.  Does 
>anyone know any vendors that supply X.25 products providing this feature or 
>any other feature which increases the efficiency of X.25 on slow serial or RF 
>links?

Why this? X.25 uses 3 header bytes per data packet. What else to you want to
compress? Where header compression would really make sense in the OSI
world is the connectionless network protocol (CLNP). There each packet
(even if it is only a VT keystroke) carries a complete NSAP pair and a lot
of other stuff which could be removed in a locally connection orientated
header compression system.

BTW: I heard about plans, that V.42bis/LZBT will be included in LAPB, so you'll
get compression for the whole PDU including the header! Has anyone more
details on this?

Markus

-- 
Markus Kuhn, Computer Science student -=-=- University of Erlangen, Germany
Internet: mskuhn@immd4.informatik.uni-erlangen.de  |  X.500 entry available
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