52:(which reserve resources for the flow of packets through the network) using controlled-load service ensures that a call cannot be set up if it cannot be supported. CAC rejects calls when either there is insufficient CPU processing power, the upstream and downstream traffic exceeds prespecified thresholds, or the number of calls being handled exceeds a specified limit.
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networks. CAC is used in the call set-up phase and applies to real-time media traffic as opposed to data traffic. CAC mechanisms complement and are distinct from the capabilities of
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tools to protect voice traffic from the negative effects of other voice traffic and to keep excess voice traffic off the network. Since it averts voice traffic congestion, it is a
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Call admission control schemes: a review. HG Perros, KM Elsayed, N Inc - IEEE Communications
Magazine, 1996 - comsoc.org
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59:. In that context, there are several schemes available. However, VoIP differs in that it uses
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CAC can be used to prevent congestion in connection-oriented protocols such as
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Procedure. It ensures that there is enough bandwidth for authorized flows.
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27:that prevents or mitigates oversubscription of
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93:"Call Admission Control"
73:connectionless protocols
17:Call admission control
71:, all of which are
46:Integrated services
40:Congestion Control
33:quality of service
25:admission control
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98:. Archived from
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23:) is a form of
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139:VoIP protocols
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105:on 2005-05-19
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107:. Retrieved
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109:2005-06-03
79:References
37:preventive
133:Category
103:(PDF)
96:(PDF)
48:with
67:and
50:RSVP
29:VoIP
75:.
65:UDP
61:RTP
57:ATM
21:CAC
135::
69:IP
63:,
112:.
19:(
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