Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.1 6/24/83; site decwrl.UUCP Path: utzoo!watmath!clyde!burl!ulysses!allegra!mit-eddie!genrad!decvax!decwrl!dec-rhea!dec-netman!callahan From: callahan@netman.DEC (JOE CALLAHAN TWO/E17 DTN247-2843) Newsgroups: net.lan,net.dcom Subject: Re: ETHERNET on Broadband Message-ID: <2926@decwrl.UUCP> Date: Thu, 27-Jun-85 16:36:50 EDT Article-I.D.: decwrl.2926 Posted: Thu Jun 27 16:36:50 1985 Date-Received: Sat, 29-Jun-85 00:36:09 EDT Sender: daemon@decwrl.UUCP Organization: DEC Engineering Network Lines: 53 Xref: watmath net.lan:892 net.dcom:1065 [] seismo!camelot!schoff asked for info regarding DEC products to put ETHERNET on a broadband cable plant. Digital does offer a set of products to permit ETHERNET operation over broadband cable systems. They are alternatives to the baseband transceiver but look just like it to all the other ETHERNET devices, e.g. DEUNA, DELNI, etc. --------------------------------- PRODUCT DESCRIPTIONS Broadband Ethernet Transceiver The Broadband Ethernet Transceiver (DECOM) is the device that provides physical and electrical interface to the broadband coaxial cable. The transceiver transmits signals onto the coaxial cable, receives signals from the cable, and detects any message collisions that may occur. Single Cable Broadband Ethernet Transceiver (DECOM-BA/BB) The single cable Broadband Ethernet Transceiver transmits in the frequency band of 54-to-72 megahertz (MHz) and receives at 210.25-to-228.25 MHz. This transceiver requires a Frequency Translator (DEFTR) at the network headend to convert the Broadband Ethernet signals from their transmit to their receive frequencies. One DEFTR is required per network. Dual Cable Broadband Ethernet Transceiver (DECOM-AA/AB) The dual cable Broadband Ethernet Transceiver transmits and receives the Ethernet signals at the same frequencies, in the band from 54-to-72 MHz. This model does not require a Frequency Translator (DEFTR) at the network headend. ------------------------------- I don't have current info on prices and availability. For that contact the Digital sales office nearest you. If the person you reach has trouble with your questions, ask to talk to someone from the "Network Sales Team". (Usual disclaimers re: these being my own and not my employer's opinions, but in this case I'd better be pretty close to being "right") /s/ Joe Callahan (... then is Real Intelligence that which has not (yet) been reduced to a set of rules? ) (DEC Easynet) NETMAN::CALLAHAN (UUCP) {decvax, ucbvax, allegra}!decwrl!dec-rhea!dec-netman!callahan (ARPA) callahan%netman.DEC@decwrl.ARPA (Telephone) 617-858-2843