210-065 · Question #301
Your customer reports that new A/V equipment that plays movies cannot be displayed on their Cisco TelePresence endpoints. This A/V equipment is connected to the Cisco TelePresence codec via an HDMI…
The correct answer is C. The A/V gear is using HDCP to prevent illegal copying. New HDMI-connected A/V equipment fails to display because HDCP copy protection on the content prevents it from being rendered on non-HDCP-compliant TelePresence endpoints.
Question
Your customer reports that new A/V equipment that plays movies cannot be displayed on their Cisco TelePresence endpoints. This A/V equipment is connected to the Cisco TelePresence codec via an HDMI cable. However, older A/V gear that uses composite cables is able to display content. What is most likely the cause of this issue?
Options
- AThe composite cables are faulty.
- BTIP negotiation is failing between the A/V gear and the Cisco TelePresence device.
- CThe A/V gear is using HDCP to prevent illegal copying.
- DThe operating system for the A/V gear is not compatible with the operating system of the Cisco
How the community answered
(40 responses)- A5% (2)
- B10% (4)
- C83% (33)
- D3% (1)
Why each option
New HDMI-connected A/V equipment fails to display because HDCP copy protection on the content prevents it from being rendered on non-HDCP-compliant TelePresence endpoints.
The composite cables are confirmed to be working correctly, which rules out cable faults as the cause of the display failure.
TIP (TelePresence Interoperability Protocol) is a Cisco proprietary video conferencing signaling protocol and has no relation to HDMI content rendering or digital copy protection.
HDCP (High-bandwidth Digital Content Protection) is a digital copy protection standard that encrypts content transmitted over HDMI. When the receiving device - in this case the Cisco TelePresence codec - does not support HDCP decryption, the content is blocked and cannot be displayed. Older composite cables do not carry HDCP signals, which is why that legacy content plays without issue.
HDMI video output operates at the hardware/firmware level; the operating systems of the two devices do not need to be compatible for video to pass through an HDMI connection.
Concept tested: HDCP copy protection blocking HDMI output on TelePresence
Source: https://www.cisco.com/c/en/us/support/docs/video/cisco-telepresence-system-1000/107934-configure-room-telepresence-00.html
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