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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

679.0. "Optical Bypass query" by LARVAE::HARVEY (Baldly going into the unknown...) Mon Aug 24 1992 08:08

    Can anyone confirm (or deny) that the Optical Bypass relays are for use on 
    Multimode fibre grades only	or can they be installed onto Single mode too ?
  
    Regards
  
    Rog

T.R	Title	User	Personal Name	Date	Lines
679.1		SHIPS::HARVEY_R	Roger Harvey	`Mon Aug 24 1992 08:26`	6
	I have just found the entries in note 320 re: bypasses, but would still like to know if we do/or intend to, support SMF and bypass relays.... Thanks for the indulgence... Rog
679.2	we don't & have no intent to	BAGELS::LEVY		`Mon Aug 24 1992 14:42`	7
	Bypass relays will NOT work with our SM implementation. Here's why: Our SM TX/RX pair require a minimum loss of 12 dB to prevent receiver over-saturation. In a bypassed configuration, there would be at least 24 dB of loss between the connected stations. The loss budget for our SM link is 23 dB.