Rita Puzmanova: Book Review: "IP Telephony with H.323: Architectures for Unified Networks and Integrated Services" by Vineet Kumar, Markku Korpi, Senthil Sengodan; Wiley, New York, 2001, 605 pages, ISBN 0471393436 (US$ 65.00). Comput. Commun. 26(12): 1431 (2003)