System and method for transporting a call
US7203199B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 31, 2000 |
| Grant date | Apr 10, 2007 |
| Priority date | — |
| Expiry date | Jan 2, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q3/0025
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system and method for transporting a call having call signaling and voiceband user communications through an asynchronous transfer mode system identifies when compression, encryption, or another processing option has been applied to the voiceband user communications. A first signaling processor processes the call signaling to identify a selected first connection and a processing option, such as a compression method, to be applied to the voiceband user communications. The first signaling processor transports a control message to a first interworking unit identifying the selected connection and the selected compression method. The first interworking unit compresses the voiceband user communications with the selected compression method, sets a convergence sublayer indicator bit as an indicator in an asynchronous transfer mode cell, fills the cell with the compressed voiceband user communications, and transports the cell over the selected connection. A second interworking unit receives the asynchronous transfer mode cell, and interworks the cell according to a decompression method for the voiceband user communications if the convergence sublayer indicator bit is set.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.