Patent · US Expired

Cellular telephone network with record keeping for missed calls

US7403767B2 · kind B2 · utility

11Cited by

3References

20Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Nematolah Kashanian · Hackensack, US
Sima Ybarra · San Diego, US
Jibu Joseph · San Diego, US
Anand Desikan · San Ramon, US
Utpal Das · Noida, IN

Key dates

Filing date	Apr 29, 2005
Grant date	Jul 22, 2008
Priority date	—
Expiry date	Jun 29, 2025

Classification

Technology area (CPC H)Electricity
CPC primaryH04W4/16
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A method of operating a cellular telephone system includes detecting that a first telephone call to a cellular telephone cannot be completed due to a lack of wireless connection to the cellular telephone. The method further includes detecting that the cellular telephone is re-connected to the system. In response to detecting that the cellular telephone is re-connected, data is sent to the cellular telephone, the data being indicative of the first telephone call. The method also includes storing the data in a missed call list in the cellular telephone.

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