System and method for distributed call signaling in telephony-over-LAN networks
US6801521B1 · kind B1 · utility
12Cited by
18References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 8, 1999 |
| Grant date | Oct 5, 2004 |
| Priority date | — |
| Expiry date | Feb 8, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/6402
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A gateway (106) to an H.323 network configured to monitor and intercept in-band signaling from external networks. The gateway (106) further provides to the H.323 terminal (102) out-of-band signaling indicative of the nature of the in-band signaling received from the external network. If the signaling changes, the gateway (106) provides this information to the H.323 terminal (102). The gateway (106) thus prevents the need to cut through audio channels for ringback tones or busy signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.