210-065 · Question #385
Users are reporting that when they receive a second video call on a Cisco TelePresence EX60 and press "Accept and Merge", they can hear the audio but cannot see the video. Which two actions should…
The correct answer is A. Set the Cisco VCS Conference Factory mode to "On." D. Set the Endpoint Multipoint mode to "MultiWay.". When 'Accept and Merge' produces audio but no video on a Cisco TelePresence EX60, the multipoint video infrastructure is not properly configured. Enabling the VCS Conference Factory and setting the endpoint Multipoint mode to MultiWay resolves the issue.
Question
Users are reporting that when they receive a second video call on a Cisco TelePresence EX60 and press "Accept and Merge", they can hear the audio but cannot see the video. Which two actions should an engineer take to fix the cause of the problem? (Choose two.)
Options
- ASet the Cisco VCS Conference Factory mode to "On."
- BSet the Endpoint ActiveControl mode to "Auto."
- CSet the Cisco VCS Call Policy configuration to "Local CPL."
- DSet the Endpoint Multipoint mode to "MultiWay."
- ESet the Endpoint DefautlCall protocol to "SIP."
How the community answered
(24 responses)- A79% (19)
- B4% (1)
- C4% (1)
- E13% (3)
Why each option
When 'Accept and Merge' produces audio but no video on a Cisco TelePresence EX60, the multipoint video infrastructure is not properly configured. Enabling the VCS Conference Factory and setting the endpoint Multipoint mode to MultiWay resolves the issue.
The Cisco VCS Conference Factory must be set to 'On' to act as the ad-hoc multipoint conference broker; without it, the VCS cannot establish a proper multipoint video session when the endpoint requests one via the merge action.
ActiveControl mode governs CUCM-based call control features and endpoint management signaling; it does not affect multipoint video conferencing capability on a VCS-registered endpoint.
Configuring VCS Call Policy to 'Local CPL' affects call routing and dial-plan logic, not the ability to bridge multiple video streams in a multipoint conference.
Setting the Endpoint Multipoint mode to 'MultiWay' instructs the EX60 to use the Cisco MultiWay protocol for multi-party video calls; without this setting, the endpoint cannot properly signal or participate in a multipoint video conference, explaining why audio merges but video does not.
Setting the default call protocol to SIP addresses signaling protocol selection for outbound calls and is not the root cause of video being absent when merging calls.
Concept tested: Cisco TelePresence MultiWay and VCS Conference Factory configuration
Source: https://www.cisco.com/c/en/us/td/docs/telepresence/infrastructure/vcs/config_guide/Cisco-VCS-Administrator-Guide-X8.html
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