Method and system for call signaling in telephone calls over a packet-switched network
US6353610B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 19, 1998 |
| Grant date | Mar 5, 2002 |
| Priority date | — |
| Expiry date | Jun 19, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M7/1245
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A telephone call from first telephone device to a second telephone device is initiated by a call directly from the first telephone device to a first gateway. The first gateway receives dialed digits from the second telephone device, identifies an address on a packet switched network of a second gateway associated with the second telephone device, which identified by the dialed digits. The first gateway contacts the second gateway via the packet-switched network. The second gateway initiates a circuit-switched telephone connection to the second telephone device. When a ringing signal or busy signal is received from the second telephone device by the second gateway, the second gateway provides a signal via the packet-switched network to the first gateway. The first gateway provides the corresponding signal to the first telephone device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.