Bruce Hartpence Voice over IP Package Guide: Introduction to VoIP Chapter 1 Part 1 Bruce Hartpence • Available on Youtube • Published 11 years ago
Voicetelmedia What is VoIP – Voice over Internet Protocol Voicetelmedia • Available on Youtube • Published 14 years ago
Spencer Brinkerhoff III Internet Protocol Spencer Brinkerhoff III • Available on Youtube • Published 15 years ago