Patent · US Active

Providing circuit switched calls and services over a broadband network

US9148451B2 · kind B2 · utility

0Cited by

12References

31Claims

0Family size

Assignee

Telefonaktiebolaget LM Ericsson (Publ) · SE

Inventors

Ola Melander · Würselen, DE
Joerg Christian Ewert · Aachen, DE

Key dates

Filing date	Nov 24, 2008
Grant date	Sep 29, 2015
Priority date	—
Expiry date	Jun 27, 2030

Classification

Technology area (CPC H)Electricity
CPC primaryH04L65/1073
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

The present invention is directed to a method, a switching server, a terminal device and system for providing circuit switched calls and services to terminal devices connected to a switching server via an IP Multimedia Subsystem. The method comprises a step of providing (S120) a first interworking entity (330) in the terminal device (300) for interworking between circuit switched signalling messages and signalling messages related to packet switched sessions towards the IMS (30). The method further comprises providing (S130) a second interworking entity (230) in the switching server (200) towards the IMS (30). The terminal device (300) is thus capable of accessing circuit switched calls and services directly from the switching server (200).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.