H11-861: HCIP-CollaborationDemo

By Huawei · Question Mode

QuestionQ31

Video conferencing implementation principles

Which of the following statements is incorrect about point-to-point calls?

  • A During a point-to-point call, the Alerting signaling is used during the H.225/RAS connection.
  • B During a point-to-point call, the called endpoint sends a call request to the GK after receiving a SETUP message.
  • C During a point-to-point call, the GK receives two call requests.
  • D During a point-to-point call, H.245 performs capability set matching before the logical channel is opened.
Explanation

ALERTING is an H.225 Q.931-style call-signaling message, whereas RAS is the separate Registration, Admission, and Status protocol used between an endpoint and a gatekeeper. It is therefore not signaling used during an H.225/RAS connection. H.245 performs terminal-capability exchange before media logical channels are opened.

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