TY - CHAP A1 - H. Toral-Cruz A2 - J. Argaez-Xool A3 - L. Estrada-Vargas A4 - D. Torres-Roman ED1 - Shigeru Kashihara Y1 - 2011-02-14 PY - 2011 T1 - An Introduction to VoIP: End-to-End Elements and QoS Parameters N2 - This book provides a collection of 15 excellent studies of Voice over IP (VoIP) technologies. While VoIP is undoubtedly a powerful and innovative communication tool for everyone, voice communication over the Internet is inherently less reliable than the public switched telephone network, because the Internet functions as a best-effort network without Quality of Service guarantee and voice data cannot be retransmitted. This book introduces research strategies that address various issues with the aim of enhancing VoIP quality. We hope that you will enjoy reading these diverse studies, and that the book will provide you with a lot of useful information about current VoIP technology research. BT - VoIP Technologies SP - Ch. 4 UR - https://doi.org/10.5772/13520 DO - 10.5772/13520 SN - PB - IntechOpen CY - Rijeka Y2 - 2021-06-14 ER -