Revision of: Carrier grade voice over IP / Daniel Collins. 2nd ed. A2003.

Leading-edge VoIP technologies, tools, and standards Efficiently deliver voice, data, and multimedia content over today's always-on broadband networks with guid

The Network Manager's Handbook is a one-of-a-kind resource featuring critical network technology assessments and career development advice from some of the most

"This book is like a good tour guide.It doesn't just describe the major attractions; you share in the history, spirit, language, and culture of the place." --He

More and more businesses today have their receive phone service through Internet instead of local phone company lines. Many businesses are also using their inte