In-service upgrade for a telecommunication system
US5459606A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 10, 1993 |
| Grant date | Oct 17, 1995 |
| Priority date | — |
| Expiry date | May 10, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q3/68
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An upgrade arrangement wherein the switching functions of an in-service switch or cross-connect system are transferred or "re-homed" onto a new, larger capacity switch via the existing input and output ports of the original system. The re-homing can be performed without loss of service, even if the original system is operating at full-capacity. By exploiting the protection redundancy engineered into existing telecommunication switching systems, all of the signals being routed through the original switch are temporarily consolidated onto only one-half of the switching fabric normally required to accommodate such connectivity. This signal consolidation allows half of the original switch ports to be brought off-line (without a service disruption), and linked to the new, higher capacity switching fabric. The signals that had been consolidated within the original switching fabric are then re-routed onto the new switching fabric (via the linked ports), and the other half of the original switch ports are brought off-line and linked to the new switching fabric. The re-routed signals (still being switched in a consolidated format within the new switching fabric) are then redistributed (unco…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.