Introduction to IP Telephony 2nd Edition, Why and How Companies Are Upgrading Private Telephone Systems to Use Voip Services

By Lawrence Harte

This book explains why people and companies are converting some or all of their existing (legacy) telephone systems from dedicated telephone systems (such as proprietary PBX) to more standard IP... This description may be from another edition of this product.

• Format: Paperback
• Language: English
• ISBN: 1932813799
• ISBN13: 9781932813791
• Release Date: September 2006
• Publisher: Althos
• Length: 88 Pages
• Weight: 0.56 lbs.
• Dimensions: 0.2" x 8.3" x 11.0"