Enhanced CMTS for reliability, availability, and serviceability
US7953125B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 9, 2009 |
| Grant date | May 31, 2011 |
| Priority date | — |
| Expiry date | Jul 23, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/173
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A Cable Modem Termination System (CMTS) is partitioned into Line Cards, I/O Cards, and a midplane to provide enhanced Reliability, Availability, and Serviceability. Each I/O Card provides a cabling interface for coupling an assigned Line Card to other portions of a Hybrid-Fiber-Coax Network. A plurality of RF signals is coupled via connectors between each Line Card and a corresponding I/O Card, via the midplane. This permits a Line Card to be removed for servicing without requiring recabling of the corresponding I/O Card. Preferably, a rectangular-multi-pin collinear connector-cascade (Line Card jack, midplane double-plug, and I/O Card jack) is used to couple the plurality of RF signals. The connector-cascade is configured with protective RF ground pins adjacent and surrounding each of a plurality of RF signal pins. This approach permits each Line Card to be removed or inserted in a single action, without attention to individual RF interconnects, yet meets all system RF requirements while using relatively inexpensive connectors. The I/O Cards preferably include a distributed backup bus that permits one of the Line Cards in the CMTS to serve as a designated backup. The backup bus en…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.