Telcordia Technologies

About: Telcordia Technologies is a based out in . It is known for research contribution in the topics: Network packet & Node (networking). The organization has 3097 authors who have published 4737 publications receiving 237882 citations.

Global interoperability of national security and emergency preparedness (NS/EP) telecommunications services

Abstract: Emergency telecommunications services, which provide priority access to public telephony for those responding to emergency situations, have previously been offered in the U.S. and other countries around the world in the public switched telephone network and more recently in cellular telephone networks. This paper describes the implementation of these national security and emergency preparedness (NS/EP) services in a next-generation network (NGN) Internet-Protocol Multimedia Subsystem (IMS) environment. The implementation was tested during a global interoperability event. The tests’ results, and implications of the analysis of the test data to future developments, are discussed.

Challenges for Mobile Voice-over-IP

Abstract: The use of IP to transport voice is receiving significant attention in the telecommunications and data networking industries. Commonly known as Voice-over-IP (VoIP), this technology has the potential to allow user communication involving multiple media types, and between terminals that offer improved capabilities and user interfaces. Meanwhile there has been explosive growth in the demand for wireless connectivity, raising the question of how VoIP can be extended to situations where users and terminals can be mobile. In this paper we survey the technologies necessary to provide mobile VoIP, and identify relevant technical challenges.