New communication technologies are being introduced at an astonishing rate. Making sense of these technologies is increasingly difficult. Communication Technology Update is the single best source for the latest developments, trends, and issues in communication technology. Now in its 12th edition, Communication Technology Update has become an indispensable information resource for business, government, and academia.

With Cisco Unified Communications Manager, you get an enterprise-class IP communications processing system for up to 40,000 users, and even 80,000 users with a "mega cluster." In addition to traditional telephony features, it provides advanced capabilities, such as video, mobility, presence, preference, and full-featured conferencing services.

Join today’s new revolution in creativity and community: hackerspaces. Stop letting other people build everything for you: Do it yourself. Explore, grab the tools, get hands-on, get dirty…and create things you never imagined you could. Hack This is your glorious, full-color passport to the world of hackerspaces: your invitation to share knowledge, master tools, work together, build amazing stuff–and have a flat-out blast doing it.

Asterisk is a powerful and flexible open source framework for building feature rich telephony systems. As a Private Branch Exchange (PBX) which connects one or more telephones, and usually connects to one or more telephone lines, Asterisk offers very advanced features, including extension to extension calls, queues, ring groups, line trunking, call distribution, call detail rerecords, and call recording.