VoIP

ALSO CALLED: Voice over Internet Protocol, IP Voice, Cable VOIP, VoIP Services, Voice over IP, Voice-over-Broadband, VoB, Voice-over-IP
DEFINITION: Call admission control (CAC) is the practice or process ofregulating traffic volume in voice communications, particularly inwireless mobile networks and in VoIP (voice over Internet Protocol,also known as Internet telephony). Call admission control can also beused to ensure, or maintain, a certain level of audio quality in voicecommunications networks, or a certain level of performance in Internetnodes  … 
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VOIP DEFINITION (continued): …  and servers where VoIP traffic exists.Most CAC algorithms work by regulating the total utilizedbandwidth, the total number of calls, or the total number of packets ordata bits passing a specific point per unit time. If a defined limit isreached or exceeded, a new call may be prohibited from entering thenetwork until at least one current call terminates. Alternatively, agraceful degradation methodology can be implemented. This means thatthe audio quality of individual calls can deteriorate to a certainextent before new calls are denied entry. Another method involves theregulation of calls according … 
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