Patent · US Active

Interworking supplementary call services between different communication protocols

US8331352B2 · kind B2 · utility

0Cited by

0References

13Claims

0Family size

Assignee

Cisco Technology, Inc. · US

Inventors

Parameswaran Kumarasamy · San Jose, US
Paul R. P. Chu · Saratoga, US
Jayesh Chokshi · Cupertino, US
Sunila R. Ainapure · Sunnyvale, US
Sandeep Kohli · Ambala, IN
Sabita Jasty · San Jose, US
Vijay Kannan · Savanuru, IN

Key dates

Filing date	Feb 5, 2007
Grant date	Dec 11, 2012
Priority date	—
Expiry date	Apr 10, 2031

Classification

Technology area (CPC H)Electricity
CPC primaryH04L69/18
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A method for interworking supplementary call services between different VOIP protocols is provided. The method comprises receiving, during a call between a first end device and a second end device, a first message in a first protocol format for the second end device to transfer the call to a third end device; determining interworking information to interwork the first message to a second message in a second protocol format; generating the second message based on the interworking information, such that the second message initiates the call transfer to the third end device.

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