Active/standby switching system and active/standby switching method
US7382720B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 27, 2003 |
| Grant date | Jun 3, 2008 |
| Priority date | — |
| Expiry date | Jun 22, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2012/5656
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An active/standby switching system includes two AAL2 (ATM Adaptation Layer Type 2) cell assembling/disassembling processor units (20, 30) as an active system and a standby system so that active/standby switching is carried out between the active system and the standby system. The active/standby switching is carried out by transferring, from one of the AAL2 cell assembling/disassembling processor units (20) which has been the active system to the other AAL2 cell assembling/disassembling processor unit(30) which has been the standby system, handover information to prevent cell loss of AAL2 cells from occurring as a result of the active/standby switching and uncompleted cell data in the course of disassembling, the AAL2 cell assembling/disassembling processor unit (30) to become a new active system receiving the handover information and the uncompleted cell data and carrying out AAL2 cell assembling or disassembling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.