Patent · US Active

Hitless protection switching

US7414965B2 · kind B2 · utility

2Cited by

8References

6Claims

0Family size

Assignee

ALCATEL · FR

Inventors

Michael Wolf · Mundelsheim, DE
Werner Beisel · Ludwigsburg, DE

Key dates

Filing date	Apr 2, 2004
Grant date	Aug 19, 2008
Priority date	—
Expiry date	Jul 11, 2026

Classification

Technology area (CPC H)Electricity
CPC primaryH04B1/74
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

Abstract

A network element with equipment protection has first and second redundant signal paths for first and second redundant signals; a selector for selecting either of the two redundant signals as active; and first and second transition monitors coupled to the first and second signal paths, respectively, for monitoring the first and second signals for bit level transitions. The selector is controlled by the transition monitors to alter selection in the case that the selected signal does not contain bit level transitions while the non-selected signal does.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.