IP Telephony Demystified

IP (Internet Protocol) telephony, the transmission of voice over the internet, is a disruptive technology with the potential to revolutionize the long distance voice market. Information Technology professionals are being asked to implement it or investigate what IP can do for their firms, This book will clarify IP telephony for business people and technology generalists, explaining how it can benefit them and how to decide when deployment makes financial and technical sense.-- IP Protocol breakdown: SIP (Session Initiation Protocol), H.323, Megaco/H.248-- Quality of Service: IntServ, DiffServ, and MPLS (MultiProtocol Label Switching)-- Covers integrating voice into a LAN data environment-- Cost and service implications