Connecting a CTS-3000 System



The CTS-3000 is a conference room TelePresence system that supports up to six users at a single location. The most obvious changes—aside from the expanded form-factor (with furniture to match)—are the two additional 65-inch displays. To support the additional processing required by the additional displays (and corresponding cameras), the primary codec distributes processing to secondary codecs. The minimum room dimensions to support a CTS-3000 are 8 x 15 x 19 feet.
Specifically, the CTS-3000 includes the following:
  • One Cisco TelePresence primary codec
  • Two Cisco TelePresence secondary codecs
  • One Cisco Unified 7975G IP Phone
  • Three 65-inch plasma displays
  • Three high-definition cameras
  • Three microphones
  • Three speakers
  • One input for auxiliary video that you can use for a document camera or PC
As with the CTS-500 and CTS-1000 systems, the primary codec is the central part of the CTS-3000 system to which all other components interconnect. Explicitly, the Cisco Unified 7975G IP Phone connects to the TelePresence primary codec via an RJ-45 cable that provides it with network connectivity and 802.3af PoE.
A video cable connects the primary codec to the center 65-inch plasma display; another cable connects the right display to the (right) secondary codec; and a third connects the left display to the (left) secondary codec. As with the CTS-1000 system, this cable is essentially an HDMI cable but with a proprietary element for carrying management information instead of audio signals (because the master codec independently processes the audio signals). Each of these secondary codecs, in turn, connects to the primary codec via a RJ-45 cable; however, no 802.3af PoE is required over these Ethernet links because the secondary codecs have independent power supplies.
Three cameras are mounted on the central display, and each camera connects to its respective codec:
  • The left camera connects to the (left) secondary codec.
  • The center camera connects to the primary codec.
  • The right camera connects to the (right) secondary codec.
Each camera connects to its respective codec via two cables: an RJ-45 cable, which provides 802.3af PoE and network connectivity to the camera, and a video cable to carry the video signals to the codec.
Additionally, three speaker cables and three microphone cables connect the (left, center, and right) speakers and (left, center, and right) microphones to the primary codec, respectively.
The primary codec also has inputs for auxiliary audio and auxiliary video. Auxiliary video can come from a PC connection or from a document camera connection (but not both at the same time). An IPS provides control for the on/off function of the document camera, attached projector, and lighting shroud of the CTS unit through an Ethernet connection.
Finally, an RJ-45 cable provides 10/100/1000 Ethernet connectivity from the primary codec to the network infrastructure. Figure 1 illustrates these interconnections for a CTS-3000 system.

 
Figure 1: Connectivity schematic for a CTS-3000 system

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