The second edition contains updated and expanded chapters and many new illustrations. It places increased emphasis on digital technology and provides a new chapter on services.

Provides information on Asterisk, an open source telephony application.

"Introduction to Telephones and Telephone Systems" provides a non-technical, easy-to-understand explanation of every major aspect of today's telecommunications systems perfect for telephone system managers, telecommunications sales professionals, and students. The book gives readers a comprehensive coverage of the four major areas of telephone systems--station apparatus, transmission, switching, signaling--plus fiber optics, PCS systems, regulatory issues and more.