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Can the Catalyst 4500/4000 switches that run CatOS extend the trust or override the incoming Class of Service (CoS) value of devices connected to the IP phones?

April 26, 2017catalyst catos EXTEND incoming override run switches Trust

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Can the Catalyst 4500/4000 switches that run CatOS extend the trust or override the incoming Class of Service (CoS) value of devices connected to the IP phones?

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A. No, Catalyst 4500/4000 switches that run CatOS cannot extend the trust or override the incoming CoS value of traffic from devices connected to the IP phones. Catalyst 4500/4000 switches that run Cisco IOS Software can support extended trust. Refer to the document Configuring Voice Interfaces.