Communication system architecture and method of establishing a communication connection therein
US6496508B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 12, 1998 |
| Grant date | Dec 17, 2002 |
| Priority date | — |
| Expiry date | Nov 12, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/5601
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
To segregate functionality and to eliminate redundancy in service logic and associated hardware that together control the interconnection of narrowband trunk circuits (252-256) and broadband virtual channels (258-262) of a mixed node communication system (FIG. 5), a switch fabric (16) has an associated memory (280) that contains a pre-provisioned table of mappings between narrowband trunk circuits (DS-0s) and broadband virtual channel identities. Therefore, to establish an end-to-end connection, the switch fabric (16) searches the pre-provisioned table (280) for an available connection and then performs the necessary cross-connection between the narrowband trunk circuit is (252-256) and the broadband virtual channel (258-262). The mappings principally relate to the narrowband-to-switch fabric interface and, as such, avoid the requirement for UNI signalling translation and negotiation, although the mappings may also include the broadband-to-switch fabric interface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.