单项选择题
Which statement describes the distributed call control model in VoIP networks？（）
A.The gateway voice-capable device is configured to support call control directly performing call setup， call maintenance， and call teardown
B.The gateway voice-capable device has a local call routing table configured through a routing protocol.
C.The gateway voice-capable device relies on a call agent to support call control.
D.The gateway voice-capable device relies on a gatekeeper to support call setup， call maintenance， and call teardown.
相关考题
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多项选择题
WhichtwopairingsmatchtheapplicationwiththecorrectCosvalue？（）
A.CoS 0 = Best-Effort Data
B.CoS 1 = Best-Effort Data
C.CoS 3 = High Priority
D.CoS 4 = High Priority Data
E.CoS 5 = Voice Bearer
F.CoS 7 = Voice Bearer -
多项选择题
Whichtwooptionscanbeusedastrafficdescriptorswhenclassifyingandmarkingtraffic？（）
A.incoming interface
B.Layer 2 differentiated services code point （DSCP）
C.Layer 3 IP precedence
D.outgoing interface -
单项选择题
What will the H.323 gateways do when they receive a call request?（）
A.forward an admission request to the local gatekeeper
B.forward an admission request to the remote gatekeeper
C.send a location request to the remote gateway
D.send a location request to the remote gatekeeper
