Company Filing History:
4 out of 1,103 
1 out of 159 
1 out of 129 
Years Active: 2008-2015
Title: The Innovations of David Frederick McGuigan
Introduction
David Frederick McGuigan is a notable inventor based in Sudbury, MA (US). He has made significant contributions to the field of telecommunications, particularly in voice communication technologies. With a total of 4 patents to his name, McGuigan's work has had a lasting impact on the industry.
Latest Patents
One of McGuigan's latest patents is focused on the alternate routing of voice communication in a packet-based network. This innovative method provides a way to perform least cost routing in distributed H.323 Voice over IP (VoIP) networks. The VoIP network is designed with a hierarchy of gatekeeper (GK) functions that facilitate alternate routing, network element redundancy, and scalability. The alternate routing function is executed by a directory gatekeeper, which selects routes based on two conditions: the unavailability of resources in the first zone and a lack of response to the directory GK's request for resources.
Career Highlights
Throughout his career, McGuigan has worked with prominent companies in the telecommunications sector, including Level 3 Communications, LLC and Verizon Corporate Services Group Inc. His experience in these organizations has allowed him to refine his skills and contribute to significant advancements in voice communication technologies.
Collaborations
Some of McGuigan's notable coworkers include Harry Edward Mussman and Robert Kellar Israel. Their collaboration has likely fostered an environment of innovation and creativity, leading to the development of impactful technologies.
Conclusion
David Frederick McGuigan's contributions to the field of telecommunications through his patents and career experiences highlight his role as a significant inventor. His work continues to influence the evolution of voice communication technologies.