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PSTN and VoIP Fundamentals

Overview/Description The history of telephony begins with the public switched telephone network (PSTN), which is the worldwide circuit-switched telephone network made up of public and private networks. Voice over IP (VoIP) is the latest telephone technology which is able to provide advanced services to both consumers and businesses, at a reduced cost. This course covers the history and operation of the PSTN and VoIP, and compares the two technologies. Basic signaling technologies used in the PSTN are also described. In addition, this course explores the expansion of VoIP in both the immediate...

VoIP Quality and Security

Overview/Description With the proliferation of VoIP in both the home and business environments, concerns such as quality of service and security are being given more attention. This course describes some of the major quality issues, such as delay and jitter, as well as security issues like confidentiality and spoofing, and discusses ways in which to address these concerns. Target Audience A range of established IT professionals with an understanding of networking technology who need to be familiar with VoIP technology. Prerequisites A basic understanding of networking technologies and good...

VoIP Technologies

Overview/Description There are a variety of technologies required to make VoIP work. Standards, protocols, and devices all need to be voice capable and, in many instances, compatible with both third-party devices and the PSTN. Along with a review of the TCP/IP protocol and basic routing, this course covers such VoIP elements as analog and digital interfaces; numbering and dial plans; gateways and gatekeepers; and the various protocols used in VoIP operation. Target Audience A range of established IT professionals with an understanding of networking technology who need to be familiar with VoIP...

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