56Kbps and ISDN serial interface boards?

[Albert Cheng]

I am looking for information on serial interface boards for either 56Kbps
or ISDN communication lines for networking development.  My primary
development machines are Sun workstations and IBM PC/AT for the moment, so
I would like any information/hints/rumors about boards that would work on
them.  I also welcome information on other models (e.g.  Macintosh, Next,
Appollo, Vax, Cray, ...) So far, I know the 56Kbps serial interface boards
must use either V.35 or RS422 interface (any other choice?).

Please send me Email at
	acheng at ncsa.uiuc.edu	(Internet)
	12399 at ncsavmsa		(Bitnet)
	uiucuxc!acheng		(UUCP)

Mega Thanks in advance.


Albert Cheng
Networking Research Programmer
National Center for Supercomputing Applications
University of Illinois
605 East Springfield Avenue
Champaign, IL 61820
217/244-1955
[Vendors are welcome to call]