1. In external network access scenarios of the eSpace UC solution, eSpace UC clients (for example, eSpace Desktop) on external networks finally register with the ( ) to implement the voice function.

2. Before configuring a prefix of the local call attribute on a U1900 series unified gateway, the system will ask you to configure a prefix of the national toll call attribute and a prefix of the international toll call attribute.

3. In a scenario where the AR provides the local regeneration function, a call fails. During the fault locating process, to identify the calling and called number information before and after the number change, obtain the debugging information of the ( ) module.

4. When adding users with non-UC rights on the BMU in batches, the user accounts fail to be added and the system displays a message indicating that the number of mobile client users exceeds the maximum value specified in the license.
Which of the following methods can be used to solve the problem?

5. AR routers provide flexible slot combinations. Two SIC slots can be combined into one WSIC slot. Two SIC slots and the WSIC slot below can be combined into one XSIC slot by removing the guide rail.

6. About the local regeneration call source of U1900 series unified gateways, which of the following statements are CORRECT? (Multiple Choice)

7. A group customer deploys two U1981s in active/standby disaster recovery (DR) mode and deploys a U1960 in both branch A and branch B as the local gateway. One day, due to the carrier network fault, the U1960 in branch A cannot detect the heartbeat of the active and standby U1981S, but the heartbeat connection between the U1960 in branch B and the active and standby U1981s is normal.
In this scenario, which of the following statements is CORRECT?

8. In the eSpace UC solution, at least ( ) network adapters must be configured for the eSpace Audio Recorder in a single-node system.

9. The process for configuring outgoing calls on an AR router at a branch node is as follows: first configure the call route, then the prefix or trunk group, and last the trunk group or prefix.
Which of the following is the logical process for the outgoing call route on the AR router?

10. What are the possible causes when eSpace Desktop fails to initiate an instant conference? (Multiple Choice)

11. The SoftConsole has the ( ) service features. (Multiple Choice)

12. In a multi-node centralized network, there is a central node with a U1981 deployed and a branch node with a U1911 deployed. SIP user A under U1911 calls an external PSTN user through the branch node's El trunk. After the call is connected, the path along which the RTP streams are transmitted is ().

13. An enterprise has two U1981s working in active/standby mode for discover recovery, and the config modify switch waittime 10 command is executed on the standby device. One morning, the active device was faulty at 09:00, and recovered at 09:05. At this time, ().

14. Which of the following statements is CORRECT about self-service?

15. In a multi-node centralized network, there is a central node with a U1981 deployed, and two branch nodes, one with a U1911 and the other with a U1960. When SIP user A under U1911 calls POTS user B under U1960, the path along which the call's SIP signaling is transmitted is ().

16. The administrator can add information about an enterprise user on the BMU.

17. Which of the following statements are CORRECT about mobile rich media functions? (Multiple Choice)

18. About the multimedia conference service, which of the following statements are CORRECT? (Multiple Choice)

19. In a multi-node centralized call management network, when local node is connected to the central active and standby node, the SIP trunks and the office route selection codes are automatically created after a distributed network is configured.

20. In the local regeneration scenario, assume that user A is a SIP user in branch site 1 and user B is a PSTN user outside branch site 1. User A calls user B through the gateway in branch site 1. In the case that local regeneration occurs in branch site 1, RTP streams go through the following path after user A calls user B and the call between user A and user B is set up: ().