Hierarchical virtual trunking over packet networks
US7944817B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 7, 2002 |
| Grant date | May 17, 2011 |
| Priority date | — |
| Expiry date | Dec 16, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D30/50
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The present invention establishes reserved paths between nodes in a central packet network and in local networks attached to the central network. Each reserved path has a defined bandwidth and may be implemented as an LSP in an MPLS network or as a PVC in an ATM network. Associated with each reserved path is a virtual trunk group representing the same bandwidth as the virtual path. Telephony calls requiring media flows associated with a channel in the virtual trunk group will transport packets along the reserved path associated with the virtual trunk group. Access to the reserved path is limited to telephony media flows associated with a virtual trunk group to ensure adequate bandwidth at all times for the number of channels associated with the virtual trunk group. Backup reserved paths may be associated with the primary reserved path to provide the necessary redundancy required for voice-based telephony applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.