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Call Admission Control (CAC) for Quality of Service in VoIP Networks

Overview VoIP (Voice over Internet Protocol) is growing rapidly as the technology of choice for new voice network deployments as well as conversion of existing networks. VoIP introduces a number of potential impairments that can impact voice quality adversely, such as the use of lossy low-bit-rate codecs, the effects of tandem encoding/transcoding, longer delays, and packet loss. Most of these impairments are either not present or are negligible in circuit-switched networks. Thus new techniques for delivering and maintaining voice quality are needed for VoIP networks. This white paper focuses on QoS for single domain connections and, in particular, the need for CAC (Call Admission Control).

Further White Paper Details
Publisher	Alcatel-Lucent	File Format	PDF
Date Published	September 2005	Downloads	66
Format	White Papers
Topics	VoIP - IP Telephony, Quality of Service, MPLS

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