Method and system for interfacing a legacy circuit-switched network with a packet-switched network
US6741695B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 3, 2002 |
| Grant date | May 25, 2004 |
| Priority date | — |
| Expiry date | May 3, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M2207/203
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An interface engine that is communicatively connected to a packet-switched network and to a legacy circuit-switched network uses a call processing protocol, such as the session initiation protocol (SIP), for packet-switched network communications and uses a legacy signaling protocol, such as IS-41, for legacy circuit-switched communications. In response to a registration request initiated by a subscriber device on the packet-switched network, the interface engine obtains a service profile for the subscriber from a call processing system, such as a home location register (HLR), of the legacy circuit-switched network. Service parameters derived from the service profile and stored in a service database may be used to apply services on the packet-switched network for the subscriber device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.