00732 a2200205 4500 Nust 20221212123548.0 2004026217 8178082586 Nust 621.38212,HER Hersent, Olivier 104644 IP telephony : packet-based multimedia communications systems / Olivier Hersent, David Gurle and Jean-Pierre Petit Pearson New Delhi 2003 xviii, 456 p. Section 1.The Application Layer IP Telephony Protocols (Page-1), Section 2. Voice Technology Background (Page-195), Section 3. The Network (Page-293). Telecommunication engineering Gurle, David 104645 ddc BK 182662 182662 0 0 ddc 0 0 MCS MCS GEN 2016-12-12 621.38212,HER MCS32519 2016-12-08 2016-12-12 BK Almirah No.36, Shelf No.2