Communications method and network with frequency allocation

U.S. Patent Number: 5307191

Abstract: Calls are made in known manner between terminals in the form of information-carrying modulation applied to emission waves that travel along common transmission lines. An emission frequency (F(2P-1)) is allocated to each terminal for each call. According to the invention, a marking wave is supplied to all of the terminals while no call is yet being set up, thereby marking an emission frequency. When a new call is being set up, the marked frequency is allocated for the new call to at least one of the terminals that are to participate in the call. The invention is particularly applicable to communications by means of optical fibers.

Inventors: Audouin; Olivier (Savigny sur Orge, FR); Gabriagues; Jean-Michael (Le Val Saint-Germain, FR); Sotom; Michel (Villebon sur Yvette, FR)

Assignee: Alcatel N.V. (Amsterdam, NL)

Application Number: 07/825,143

Issued: 1994-04-26

Expired: 2006-04-26

Classes: 398/71 ; 370/480; 370/485; 398/31; 398/61

Field of search: 370/69.1,76,95.1 359/120-121,124-125

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