Which of the following cables does not need to be connected to a Cisco TelePresence PrecisionHD camera
when the camera is connected to a C-series codec and to another Cisco TelePresence PrecisionHD camera?

A.
a video cable

B.
an RJ11-to-RJ45 cable

C.
a VISCA cable

D.
a 12-volt direct current power cable

Explanation:
A 12-volt direct current power cable does not need to be connected to a Cisco TelePresence PrecisionHD
camera when the camera is connected to a C-series codec. Multiple Cisco TelePresence PrecisionHD cameras
can be daisy-chained together; however, all of them require power except for the camera that is directly
connected to the codec.
A video cable must be connected to a Cisco TelePresence PrecisionHD camera. The camera has two outputs:
a High-Definition Multimedia Interface (HDMI) output and a high-definition serial digital interface (HDSDI)
output. Both outputs can be connected simultaneously.
An RJ11-to-RJ45 cable is required to connect one Cisco TelePresence PrecisionHD camera to another. The
RJ11 end connects to the daisy-chaining port of the camera that is closer to the codec; the RJ45 end connects
to the camera control port of the farther camera.A VISCA cable is required to connect a Cisco TelePresence PrecisionHD camera to a C-series codec. The
VISCA cable, which is an RJ11-to-RJ45 cable, is used for camera control functions and also provides power to
the directly connected camera.

Cisco: Installing Cisco TelePresence PrecisionHD Camera – 1080p12x (PDF)