01260nam a2200217Ia 4500 CTU_157773 210402s9999 xx 000 0 und d 65.95 004.68 F514 Finneran, Michael F. Voice Over Wlans : The complete guide Michael F. Finneran Amsterdam Elsevier/Newnes 2008 Wireless local area networks (WLANs) have traditionally been used to transport only data, but are now being used to carry voice traffic as well as provided new combined voice and data services. Voice over WLANs also offers more flexibility than wired networks (changes to a WLAN don't require changes to installed wiring) and greater capacity than wired networks. This book provides a solid overview of voice over WLANs/VoIP (voice over internet protocol) technology, including voice coding, packet loss, delay and "jitter," and "echo" control. It shows how to combine both WLAN and VoIP technology to create effective voice over WLAN systems. Wireless LANs,Internet telephony,Mạng không dây,Điện thoại internet Trọng Hải Trung tâm Học liệu Trường Đại học Cần Thơ