Voice Ip

Springer

Voice over IP in Wireless Heterogeneous Networks: Signaling, Mobility and Security (Signals and Communication Technology)

Wiley-Interscience

Implementing Voice over IP (English Edition)    

4th Watch Publishing Co.

NIST SP 800-58 Security Considerations for Voice Over IP Systems (English Edition)

17 Rew

Voice Over IP                                    

Worth Godwin Basic Computer Training

Pros and Cons of "VOIP" or Voice Over IP Internet Telephone Service

Voice over IP unter Linux: Nebenstellenanlage mit Asterisk by Michael Sauer (2013-06-27)

Voice Over Ip Security                          

[(Deployment, Management and Monitoring of Voice Over IP Services )] [Author: Aisling O' Driscoll] [Jan-2014]

Springer

By Fathi, Hanane Voice over IP in Wireless Heterogeneous Networks: Signaling, Mobility and Security (Signals and Communication Technology) Hardcover - October 2008

Wiley

VoIP: Wireless, P2P and New Enterprise Voice over IP