Patent · US Active

Method and system for preventing endless looping during telephone call set up

US7596219B1 · kind B1 · utility

1Cited by

21References

25Claims

0Family size

Assignee

Sprint Spectrum LLC · US

Inventors

Baoquan Zhang · Overland Park, US
Karen Harden Miller · Overland Park, US
Charles E. Woodson · Peculiar, US

Key dates

Filing date	Apr 9, 2004
Grant date	Sep 29, 2009
Priority date	—
Expiry date	Sep 30, 2026

Classification

Technology area (CPC H)Electricity
CPC primaryH04M2207/12
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

Abstract

A method for setting up a call to a subscriber station. The method comprises, at a first telecommunications platform, receiving a first request to set up a call to a subscriber station. The first request is processed at a second telecommunications platform. The second platform provides a second request to set up the call to the subscriber station, where the second request includes a non-loop parameter. The second request is received at the first platform and the first platform responsively sends a service request including the non-loop parameter to a third telecommunications platform. The third platform detects the non-loop parameter and, in response to at least the non-loop parameter, directs the first platform to set up the call to the subscriber station.

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