Patent · US Active

Error correction for DTMF corruption on uplink

US8233951B2 · kind B2 · utility

0Cited by

9References

12Claims

0Family size

Assignee

RESEARCH IN MOTION LIMITED · CA

Inventors

Valentina Iqorevna Kramarenko · Milton, CA
Ximing Zeng · Waterloo, CA
Zhigang Ruan · Waterloo, CA

Key dates

Filing date	Jan 25, 2010
Grant date	Jul 31, 2012
Priority date	—
Expiry date	Oct 24, 2030

Classification

Technology area (CPC H)Electricity
CPC primaryH04M2203/1091
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

Abstract

Aspects relate to provision of enterprise call capabilities to mobile devices. For example, a mobile device can indicate, over a data channel, that a PBX is to make a call on its behalf to a called party. The PBX can call back the mobile device, call the called party, and bridge those call legs to establish the call. The mobile device can employ mechanisms that a particular incoming call is made by the PBX. These mechanisms can include using ANI information, sending, and receiving audible verification codes over the voice channel established after answering the incoming call. The verification codes can be selected based different behaviors of the mobile devices.

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