The Basics of Telecommunications provides the foundation upon which all future understanding of the industry will be built. The fifth edition of this best-selling handbook has been newly updated to reflect the industry's latest advancements and current trends and covers all major information-industry technologies, including asymmetric digital subscriber line (ADSL), cable modems, fiber-optic technology, synchronous optical networks (SONETs), asynchronous transfer mode (ATM), optical networks, intelligent networks, voice over Internet protocol (VoIP), Internet telephony, and mobile communications. It also covers a wide variety of related topics, including operations support systems (OSSs), virtual private networks (VPNs), digital technology, and Internet access.

The Basics of Voice over Internet Protocol examines the fundamentals of delivering VoIP service while exploring its potential in the communications market. VoIP is now becoming a mainstream service offered by RBOCs, CLECs, long-distance carriers, international carriers, and virtually any entrant to the transport business. Yet despite this, multiple standards for VoIP still exist, making the interworking of vendor products and the myriad alternative protocols-H.323, SIP, MGCP, etc.-a continuing issue. Further, the quality of VoIP telephone conversations is still under question, and the seeming significant initial costs of setup, including the change-out of phones and PBXs, as well as the addition of gateway and gatekeeper devices, may undermine the benefits to be had from implementing VoIP.

The Basics of Satellite Communications explains the fundamentals of communications satellite systems, covering not only the technology of the industry but its other key elements as well. Intended for the non-engineer or those just starting in the field, this handbook examines the evolution of spacecraft and communications payloads, earth-station antennas and user terminals, launch systems, satellite standards and regulatory processes, the key institutions, the economics and financial aspects, and the various services now offered and those anticipated, seeking finally to provide some understanding of future technology and systems yet to come.

The integration of cellular networks, WLANs, and wireless metropolitan networks continues to progress rapidly, and wireless connection is becoming the norm in the daily lives of people around the world. The Basics of 802.11 Wireless LANs will help you understand the architecture and implementation of wireless local-area networks. This instructional resource examines the 802.11a, 802.11b, and 802.11g specifications, the benefits of each, and their interoperability. It also delves into the evolution of the various spread-spectrum techniques and explains the many forms of signal modulation, including frequency, amplitude, and phase. The Basics of 802.11 Wireless LANs also contains the latest information on broadband wireless access, including mobile wireless, fixed wireless, and Wi-Fi hotspots. This volume is a must-read for everyone, from students to business managers, who needs to sharpen their understanding of wireless communications.

The integration of cellular networks, WLANs, and wireless metropolitan networks continues to progress rapidly, and wireless connection is becoming the norm in the daily lives of people around the world. The Basics of 802.11 Wireless LANs will help you understand the architecture and implementation of wireless local-area networks. This instructional resource examines the 802.11a, 802.11b, and 802.11g specifications, the benefits of each, and their interoperability. It also delves into the evolution of the various spread-spectrum techniques and explains the many forms of signal modulation, including frequency, amplitude, and phase. The Basics of 802.11 Wireless LANs also contains the latest information on broadband wireless access, including mobile wireless, fixed wireless, and Wi-Fi hotspots. This volume is a must-read for everyone, from students to business managers, who needs to sharpen their understanding of wireless communications.

The integration of cellular networks, WLANs, and wireless metropolitan networks continues to progress rapidly, and wireless connection is becoming the norm in the daily lives of people around the world. The Basics of 802.11 Wireless LANs will help you understand the architecture and implementation of wireless local-area networks. This instructional resource examines the 802.11a, 802.11b, and 802.11g specifications, the benefits of each, and their interoperability. It also delves into the evolution of the various spread-spectrum techniques and explains the many forms of signal modulation, including frequency, amplitude, and phase. The Basics of 802.11 Wireless LANs also contains the latest information on broadband wireless access, including mobile wireless, fixed wireless, and Wi-Fi hotspots. This volume is a must-read for everyone, from students to business managers, who needs to sharpen their understanding of wireless communications.