Beyond VoIP Protocols: Understanding Voice Technology... by David Gurle Hardback

Packet Guide to Voice over IP: A system administrator's guide to VoIP techno...

M2M COMMUNICATIONS: A Systems Approach - Boswarthick/Elloumi/Hersent - 2012 HB

Voice over Internet Protocol (VoIP) Security

IP Telephony: Packet Based Multimedia Communica... by Hersent, Olivier Paperback

IP Telephony: Deploying Voice-over-IP Protocols

Voice Over Internet Protocol (Voip) Security

Beyond VoIP Protocols: Understanding Voice Technology and Networking Techniques