H11-879 試験問題を無料オンラインアクセス

In the message classification of the RTCP protocol, which of the following messages describe the receiving statistics data of the receiving gateway? ()

• A.BYE
• B.RR
• C.SDES
• D.SR

In the converged conference MCU central networking mode, what method does the eSpace PC support to join the conference directly with the chairman authority? () (multiple choice)

• A.Invitation from outside
• B.Key in the conference list
• C.Join by email link
• D.Dial in

Hold a 720P30 conference with low frame rate secondary stream, the recommended conference bandwidth is
768Kbps, and the recommended network. The bandwidth is 1.5 times the conference bandwidth. () Correct or Wrong

• A.Correct
• B.Wrong

In the remote disaster recovery scenario, when the master node (U1981) fails, POTS user A of a branch node (The branch site equipment is U1911). If you make an outgoing call to the local PSTN user B through the branch node, the network element through which the SIP signaling of the call passes is ().

• A.U1911->Main U1981->Backup U1981->U1911
• B.U1911
• C.Prepare U1981->U1911
• D.U1911->Preparation U1981->U1911

The U1900 system is connected to the PSTN through a digital trunk. In U1900, phone A cannot call user B's On mobile phone, user B can call back phone A normally. Which of the following reasons may cause this failure? () (single choice)

• A.Phone A has been added to the system's blacklist of called parties
• B.Phone A is not registered properly.
• C.The digital trunk connection between U1900 and PSTN is faulty.
• D.Phone A outbound call permission restriction