300-820 試験問題を無料オンラインアクセス

Which method is used to send the incoming call request to the client when the traversal server receives an incoming call for the traversal client?

• A.opening an outbound connection directly to the client through the firewall
• B.opening an inbound connection directly to the client through the firewall
• C.requesting for permission from the firewall
• D.using an existing keep alive connection opened by the client

Refer to the exhibit. Which option addresses the warning message "This location main number might not be attended or active."?

• A.Choose Assign Extension from the dropdown and select an extension.
• B.Choose Assigned Number from the dropdown and select a number.
• C.This message will disappear after location has users configured.
• D.Choose Route Group from the dropdown and select a route group.

Refer to the exhibit. Mobile and remote access is being added to an existing B2B deployment and is failing.

When the administrator looks at the alarms on the Expressway-C, the snippets are shown. Which configuration action should the administrator take to fix this issue?

• A.The listening port on the Expressway-C for SIP TLS must be changed to a value other than
  5061
• B.The listening port on the Expressway-C for SIP TCP must be changed to a value other than
  5060
• C.The listening port on the Cisco UCM for the Expressway-C SIP trunk must be changed to something other than 5060 or 5061
• D.The listening port on the Cisco UCM for the Expressway-C SIP trunk is set to something other than 5060 or 5061. It must be set to 5060 for insecure and 5061 for secure SIP

Which service is available in a cloud-based deployment using Cisco Webex Messenger?

• A.Call forward services
• B.Voicemail
• C.Presence
• D.Phone services

Refer to the exhibit. After phone numbers are migrated into Webex Calling via Control Hub, users report that incoming calls fail to ring on their assigned phones, and callers hear a rejection message.
The administrator determines:
- Devices show as registered in the Control Hub device status view.
- Media statistics for other calls are normal
- In user and device assignments, the numbers are mapped to users.
What is the cause of this issue?

• A.The phone numbers are not assigned to any device.
• B.The Call intercept feature is enabled on user accounts, which causes all incoming calls to be blocked.
• C.The user location has insufficient internet bandwidth.
• D.The caller's network is experiencing high latency.