Andy’s Cisco Exam Notes

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With QoS feature in place, there can be up to 10 concurrent VoIP calls over a company WAN link. Is there need for CAC? With no CAC, what will happen when there are more than 10 concurrent calls?

Posted by engineeringtop on January 23, 2008

Yes, CAC compliments QoS configurations so that WAN bandwidth does not get oversubscribed. With no CAC over 10 concurrent calls, packets will be dropped indiscriminately and experience poor voice quality on all calls not just on those after 10.

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