ericd@ms.uky.edu (Eric B. Durbin) (07/25/90)
We're in need of vendors for a broadband modem and a data link bridge to
attach our ethernet to an Ungerman Bass broadband.
Any names, numbers, addresses, and/or experiences will be greatly appreciated.
Thanks in advance.
--
[] Eric B. Durbin (606) 257-4581 [] ericd@ms.uky.edu []
[] University of Kentucky [] ericd@UKMA.BITNET []
[] 165 Markey Cancer Center [] {rutgers, uunet}!ukma!ericd []
[] Lexington, KY 40536-0093 [] eric.durbin@ukwang.uky.edu []kwe@bu-it.bu.edu (Kent England) (07/25/90)
Ungermann-Bass broadband systems are proprietary and require U-B gear. I like the Buffered Repeater myself. See also "Tandem Computer". :-) --Kent In article <15699@s.ms.uky.edu>, ericd@ms.uky.edu (Eric B. Durbin) writes: > We're in need of vendors for a broadband modem and a data link bridge to > attach our ethernet to an Ungerman Bass broadband.
AMillar@cup.portal.com (Alan DI Millar) (07/26/90)
> Ungermann-Bass broadband systems are proprietary and require > U-B gear. .... You'll have to get the broadband modem from UB, but the data link bridge can be from anybody. UB calls them data link bridges because so many vendors (including UB in the past) sell "bridges" that are really routers. Any protocol-independent bridge will work. The broadband modem will give you a 15-pin AUI connector, which you can hook up to most vendors' equipment. - Alan Millar AMillar@cup.portal.com
kwe@bu-it.bu.edu (Kent England) (07/27/90)
In article <32106@cup.portal.com>, AMillar@cup.portal.com (Alan DI Millar) writes: > > Ungermann-Bass broadband systems are proprietary and require > > U-B gear. .... > > You'll have to get the broadband modem from UB, but the data link bridge > can be from anybody. UB calls them data link bridges because so many vendors > (including UB in the past) sell "bridges" that are really routers. Any > protocol-independent bridge will work. The broadband modem will give you > a 15-pin AUI connector, which you can hook up to most vendors' equipment. > > - Alan Millar AMillar@cup.portal.com Terminology clash here. "Broadband modems" don't have AUI interfaces. If you want a bridge from someone else, you will have to use a U-B Buffered Repeater (which includes the broadband interface) to attach it to the CATV system. Ethernet signals are not bit-repeated onto the broadband. The signalling is different and the bit rate is halved. U-B uses a different scheme than IEEE-spec broadband Enet. I think some of those vendors call their gear "modems". You can use a simple single channel translator with a U-B Buffered Repeater, most commonly on mid-split 4A/R channels. U-B bridges are bridges. They never did deliver a marketable router for IP. They did a router for their XNS, as I recall, but they never really got the hang of TCP/IP. --Kent
dd@ariel.unm.edu (Don Doerner) (07/27/90)
In article <61315@bu.edu.bu.edu> kwe@bu-it.bu.edu (Kent England) writes: >Ungermann-Bass broadband systems are proprietary and require >U-B gear. I like the Buffered Repeater myself. I will sure second that one! > >See also "Tandem Computer". :-) -- -------------------------------------------------------------------- Don Doerner dd@ariel.unm.edu 2701 Campus Blvd. NE (505)277-8036 Albuquerque, NM, 87131