Method of ensuring that each node of a private telecommunication

Details Method of ensuring that each node of a private telecommunication Method of ensuring that each node of a private telecommunication

1994-12-01

1995-12-12

Chin, Stephen

Pulse or digital communications

Synchronizers

Network synchronizing more than two stations

375357, 370103, H04L 700

Patent

active

054757177

ABSTRACT:
In a method of synchronizing nodes of a private telecommunication network to the best available clock at all times, each node of the network is normally synchronized by externally originated clock signals which reach it via a point-to-point digital transmission link input. Two node inputs are preselected as main and backup master clock inputs and each node is selectively preselected as a potential supplier of clock signals to each of the nodes to which it is connected by one of its master clock inputs, the nodes of the private network interconnected in this way determining a synchronization tree. In the event of loss of clock signals an exchange of information is instigated between adjacent nodes to reconfigure the synchronization tree that these nodes constitute so that each of them is synchronized to the best available clock.

REFERENCES:
patent: 4736393 (1988-04-01), Grimes et al.
patent: 4794596 (1988-12-01), Gloyne et al.
patent: 4837850 (1989-06-01), Maisel et al.
patent: 5060241 (1991-10-01), Allouis et al.
patent: 5068877 (1991-11-01), Near et al.
IBM Technical Disclosure Bulletin, vol. 25, No. 11B, Apr. 1983, New York, USA, pp. 6293-6298; L. S. Rogers: "clock source selection method in distributed communication system network."

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