Method and system for protecting a communication network, said communication network including a transport network
US7764602B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 7, 2004 |
| Grant date | Jul 27, 2010 |
| Priority date | — |
| Expiry date | Apr 22, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J2203/006
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The invention relates to a system for protecting a communications network comprising a transport network (3) and end-channel equipment (1) such as routers each connected to said transport network (3) by connecting sections wherein said protective system is provided with first and second protective systems. Said invention is characterized in that for each communications channel between two pieces of said end-channel equipment (1), the first protective system is activated when a failure is detected in said transport network (3) which emits a direct channel alarm message (AU-AIS) to equipment on the downstream end thereof, said second protective system is activated, after detection by end equipment of said channel (1) of a failure in the connection section connecting it to said transport network or when equipment (1) of the downstream end of said channel receives the direct or indirect alarm message (AU-AIS, AU-RDI) emitted by the transport network and the second protective system is activated, after reception of the direct alarm message (AU-AIS), with a delay longer than after detection of the failure on a second connection section between said transport network (3) and end-channel e…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.