Cell Relay Archive

["Maurice Baker" <mrbaker@att.com>]

It's not a "book" in the usual sense, but the ATM Forum document on UNI 4.0
signalling is readily available for download at

ftp://ftp.atmforum.com/pub/approved-specs/af-sig-0061.000.pdf

I suspect that Appendix E "Known Differences with UNI 3.1" might be of
particular interest, based on comments in your origianl message.

A definitive *book* is the "ATM User-Network Interface Specification V3.1"
which is not freely downloadable but is available for purchase through
ordinary book retail outlets or perhaps a nearby library with a decent
selection of technical books related to telecomm might have it / be able to
get it for you.  Via amazon.com, the URL for reference is ---

http://www.amazon.com/exec/obidos/ASIN/013393828X/qid=1001529021/sr=1-1/ref=
sr_1_4_1/102-0806070-3149757

Final comment is that equipment manufacturers certainly have been known to
differ on occasion in their implementations of QoS, BCOB, ATC,  etc. info
element coding [between vendors as well as between particular units and even
software releases within a product line] and how their boxes tend to
generate and/or respond to various combinations of IE choices during SVC
signaling.  So your observation is not too surprising..... I suppose you can
pick what you want for a homogeneous network composed of only "your" product
but in reality I imagine interoperability is at least somewhat important (it
sure is to customers these days :-) --- in that case, there is really no
substitute for lab testing the various units with which you're going to
interwork and have a good ATM test set (generator/analyzer) at the ready.

Hope these remarks are helpful....

========

"Bryan Schwerer" <bschwerer@cylink.com> wrote in message
3bb1c917.166538499@news.randori.com">news:3bb1c917.166538499@news.randori.com...
> I've been assigned to take over the signalling statck of our ATM
> product.  Is there any good reference book to help me understand  the
> information elements and proper signalling behaviors?  Also difference
> between UNI 3.0, 3.1, and 4.0.  I've already run into a problem with
> QOS coding standard between 3.0 and 3.1 and could not find adequate
> reference.