... Pat, your understanding is incorrect. Xyplex was founded by 3 ex-DECies as a terminal server company before Digital had established the LAN DECserver and LAT. One of the founders was the author of the CTERM protocol and witnessed the debacle of the Mercury terminal server. (but I digress) Their initial designs used proprietary LAN media and protocols. Their later products used more commodized technology of the times. I don't know the 'rep of their product. But the company was very successful for awhile but was later acquired by Raetheon and then traded around the aerospace/computer industry before disappearing. Xylogics had been in business for many years doing various computer related things, including peripherals and disk drives, before acquiring the rights to the "Annex" product line from a third party. The products were based on a proprietary Unix kernel and spoke telnet, PPP, and LAT and other things. I was instrumental in getting them to implement RADIUS. In 1996 they were accquired by Bay Networks where they continued to produce terminal server products (5399 blade system) until the merger with Nortel. I'm not sure what happened to the IPR of the Annex, I believe it was sold to another company. The former DEC terminal server line was spun off to Cabletron, and the remains live in Enterasys. I attempted to assertain whom owns the rights to LAT last year (as a reference in RFC 4005 Diameter NAS Application) and got a murky answer. The last vendor selling code (Meridian) went out-of-business a few years back. Dave Mitton.