Patent · US Active

Method and apparatus for presence indication of cellular telephones

US7840212B2 · kind B2 · utility

2Cited by

1References

20Claims

0Family size

Assignee

Siemens Enterprise Communications, Inc. · US

Inventors

Rami Caspi · Sunnyvale, US
Jeffrey Blohm · Menlo Park, US

Key dates

Filing date	Apr 21, 2006
Grant date	Nov 23, 2010
Priority date	—
Expiry date	Oct 8, 2027

Classification

Technology area (CPC H)Electricity
CPC primaryH04W8/12
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A telecommunications system includes a plurality of cellular telephone networks; a presence server configured to receive cellular telephone network registration information from presence clients and provide cellular telephone network identification indicia to others of said presence clients.

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