Methods and apparatus for providing voice communications through a packet network
US6304567A · kind A · utility
66Cited by
3References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 29, 1997 |
| Grant date | Oct 16, 2001 |
| Priority date | — |
| Expiry date | Oct 29, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2012/6475
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A communications system multiplexes voice communications signals onto one or more transport level connections established through a packetized network, such as the Internet. The invention supports the use of variable-length packets and accommodates variable jitter. The system conforms to real time protocol (RTP) and employs internet telephone gateways (ITGs) to bind users to channel identifiers, to indicate payload type and length, to provide channel identification and time stamps, and to indicate cessation and resumption of voice traffic from a particular user through use of, for example, marker bits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.