IP Telephony: Private Branch Exchange(PBX) vs. VoIP

by Billy Short
Oct. 2, 2017 0 comments Infosecwriters

Internet Protocol telephony (frequently referred to as IP telephony) is an important concept in enterprise communications technology. IP telephony refers to all real-time applications over IP, which include many different instant messaging programs, video-conferencing, fax services, and Voice over Internet Protocol (VoIP). This document will focus mostly on the VoIP aspect of IP telephony.

http://www.infosecwriters.com/Papers/BShort_IPTele.pdf