Cell Relay Archive

[Juhana.Rasanen@hut.fi (Juhana R=E4s=E4nen)]

   Greetings,

I'd appreciate some opinions about UNI 4.0, whether or when it might
be widely deployed, how compatible it is with UNI 3.1, is it in use
anywhere, etc.

UNI 4.0 spec is now about one year old, but you don't (well, at least
I don't) see much enthusiasm going on in the industry. Manufacturers
don't bother to mention 4.0 in their product data sheets, but some
protocol software houses do have 4.0 available. (But is anyone really
buying it?) It seems to me that few really bother to take UNI 4.0
seriously, as the current systems are more or less up and running 3.1
without trouble. I might be wrong here and it's just going to take more
time, so opinions are welcome.

The reason I'm pondering this is that we have a research project going
on involving UNI signalling. As we already have a prototype of Q.2931
it would be natural to go on with 4.0 rather than 3.1, but the problem
is that it would be nice to demonstrate interoperability with commercial
systems. UNI 4.0 spec doesn't state clearly how well it would work with
3.1, so if anybody out there has tried out e.g. public UNI between a 4.0
and 3.1 switch or 3.1 user signalling with a 4.0 switch, I would be very
interested in your experiences.


Thanks,

--
Juhana R=E4s=E4nen <Juhana.Rasanen@hut.fi>

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