In a multi-node centralized network, there is a central node with a U1981 deployed and a branch node with a U1911 deployed. When POTS user A under U1911 calls an external PSTN user through the branch node's El trunk, the path along which the call's SIP signaling is transmitted is:
A. U1911->U1981->U1911
B. U1981->U1911
C. U1911->U1981
D. U1981
Which of the following statements are CORRECT in the active/standby disaster recovery (DR) scenario? (Multiple Choice)
A. After an active/standby switchover of the gateways for disaster recovery, services can be configured on the standby gateway using the BMU.
B. Either local two-node cluster or remote disaster recovery can be deployed for the gateways.
C. Gateway data can be synchronized from the standby gateway to the active gateway.
D. The active and standby nodes must use the same unified gateway model.
In the disaster recovery scenario, when the primary node is faulty, which of the following statements are CORRECT? (Multiple Choice)
A. On the standby node, you can run the show connectstates stationtype primaryserver command to query the connection status between the primary and standby nodes.
B. The status of the connection to the primary node is displayed as disconnected on the standby node.
C. On the standby node, you can run the show workstatus command to query the working status of the primary node.
D. The working status of the standby node is Deactivate.
AR series enterprise routers are the next-generation routing and gateway devices that provide routing, switching, wireless, voice, and security functions. AR series gateways function as integrated branch access gateways in the eSpace UC solution network.
A. TRUE
B. FALSE
In an external network access scenario, an SBC and an enterprise firewall are deployed in parallel. Which of the following statements are INCORRECT as regard to the external eSpace Mobile authentication and registration processes?
A. All SIP messages between the eSpace Mobile and the U1900 must pass through the SBC.
B. The eSpace Mobile initiates an authentication request to the MAA in the DMZ through the SBC.
C. The MAA sends the SBC extranet IP address of the SIP server to the eSpace Mobile through the firewall.
A U1981 has been deployed in an enterprise and connects to the PSTN through the PRA trunk. After an incoming call from an external user is routed through the PRA trunk, to disallow the external user to call other external users, it is recommended that the outgoing call permission of the trunk be set to ().
A. Intra-office call
B. Local call
C. National toll call
D. International toll call
In the eSpace Audio Recorder solution, U1900 series unified gateways are connected to the recording system through the () protocol.
A. H.323
B. FTP
C. H.248
D. SIP
The eSpace UC solution provides the recording function through the UMS component.
A. TRUE
B. FALSE
About a multi-node centralized network, which of the following statements are CORRECT? (Multiple Choice)
A. All users have their services configured and controlled in a unified manner on the central node.
B. In normal conditions, the local node does not accept registration requests from SIP users.
C. POTS users on the local node register with the central node directly.
D. On the central node, you can view the license information about the local node.
Two U1981s are deployed in active/standby mode. By default, when the heartbeat connection between the active and standby devices has been lost for () minute(s) due to the active device fault, the active device is deactivated and the standby device becomes activated.
A. 3
B. 5
C. 1
D. 2
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