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Conference 7.286::fddi

Title:FDDI - The Next Generation
Moderator:NETCAD::STEFANI
Created:Thu Apr 27 1989
Last Modified:Thu Jun 05 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:2259
Total number of notes:8590

851.0. "Compatability with our FDDI copper?" by RTPL08::GRAY (Jack of all trades; Master of none) Fri Feb 05 1993 19:11

    Could someone provide me with a response the following question from a
    customer?
    
    >>Can you tell me with which vendors DEC's FDDI concentrator copper 
    >>interface is compatible?
    
    Thanks in advance,
    Lee
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851.1LEVERS::B_CRONINMon Feb 08 1993 20:289
    There are two parts to this answer. The first is that DEC's Thinwire 
    is only compatible with DEC. 
    
    The STP interface is compatible with anything that implements the 
    "Gang of Five" specification. Note this is not the "SDDI" specification
    supported by IBM. I don't have a current list of vendors supporting 
    that spec which, of course, is what you really need. 
    
    Bill
851.2STP standard = ThinWire?ISKATE::BILLDMon Aug 09 1993 20:295
	Does the STP standard apply to ThinWire, as was emplied in the previous
reply?

	Bill D.
851.3STP,Gang 'o Five, Thinwire != standard-basedLEVERS::MELARAGNIMon Aug 09 1993 23:2213
    No, absolutely not. Both the Gang of Five, STP, and Thinwire
    implementations are PROPRIETARY in that no standard exists that supports
    any of them. I've heard tell that IBM is (was) trying to create an
    ANSI-based standard for their STP stuff, but it think that has all but
    died in the face of TP-PMD.
    
    Gang of Five and STP are quite similar but have some subtle
    differences. Thinwire is completely different that any other media
    implementation (it uses only one cable for bidirectional communication
    using echo cancelation). As far as i know DEC is the only producer of a
    Thinwire PMD.
    
    bill
851.4Final Question....ISKATE::BILLDThu Aug 12 1993 14:515
	For a final question: Is there a standard being worked on for a ThinWire
implementation as there is for UTP and STP?

	Bill
851.5LEVERS::MELARAGNIThu Aug 12 1993 16:221
    No.