Understanding internet telephony and unified communications : making VoIP and UC work for you /

• Κύριος συγγραφέας: Flanagan, William A.
• Μορφή: Ηλ. βιβλίο
• Γλώσσα: English
• Έκδοση: Hoboken, N.J. : Wiley, [2011]
• Θέματα: Internet telephony.; TECHNOLOGY & ENGINEERING > Telecommunications.; COMPUTERS > System Administration > Email Administration.; Electronic books.

 "The new generation of voice services and telephony will be based on packet networks rather than TDM transmission and switching. This book addresses the evolution of telephony to Voice over IP (VoIP) and Unified Communications (UC), bringing email, voice mail, fax, and telephone services to one user interface. Concise and to the point, this text tells readers what they need to know to deal with vendors, network engineers, data center gurus, and top management with the confidence and clear understanding of how things really work. It serves as a useful tool for engineers just entering the field, as well as for experienced engineers and technical managers who want to deal effectively with sales people"--   Provided by publisher. 

 Frontmatter -- IP Technology Disrupts Voice Telephony -- Traditional Telephones Still Set Expectations -- From Circuits to Packets -- Packet Transmission and Switching -- VoIP Signaling and Call Processing -- VoIP and Unified Communications Define the Future -- How VoIP and UC Impact the Network -- Interconnections to Global Services -- Network Management for VoIP and UC -- Cost Analysis and Payback Calculation -- Examples of Hardware and Software -- Appendixes -- Index.