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by Cisco
Product Line: Cisco MCU 4500 Series
Product Type: Multipoint Control Unit
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Title: Surplus

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Product Description

The CTI-4505-MCU-K9 Cisco offers video conferencing capabilities with support for up to 12 continuous presence video participants at 720p30 or 6 at 1080p30/720p60, and an asymmetric capacity of 12 participants at 1080p30 with the HD+ option. It features a variety of video standards including H.261, H.263, H.263+, H.263++, and H.264, and can stream video at a bandwidth of up to 4 Mbps per site, with support for both unicast (24 streams) and unlimited multicast streaming. The device is equipped with 10/100/1000 Mbps Full/Half Duplex RJ-45 Ethernet, an RJ-45 Serial Port, and a CompactFlash Socket, housed within a 3.43 x 17.4 x 19.25 in. frame, making it suitable for standard 19-inch rack mounting.

FAQs for the CTI-4505-MCU-K9

  • What is the maximum number of video participants supported at 720p30 in symmetric mode?
    The maximum number of continuous presence video participants at 720p30 in symmetric mode is 12.
  • How many participants can the system support with the 1080p30 HD+ Capacity Option in asymmetric mode?
    With the 1080p30 HD+ Capacity Option in asymmetric mode, the system can support up to 12 participants.
  • What is the total number of additional voice participants the system can accommodate?
    The system can accommodate up to 12 additional voice participants.
  • How many unicast video streams can the system handle?
    The system can handle up to 24 unicast video streams.
  • What is the limit for multicast video streaming?
    Multicast video streaming is unlimited.
  • What is the maximum bandwidth per site that the system supports?
    The maximum bandwidth per site that the system supports is up to 4 Mbps.
  • Which video standards are supported by the system?
    The system supports H.261, H.263, H.263+, H.263++, and H.264 video standards.
  • What are the interface options available on the system?
    The system provides 10/100/1000 Mbps Full/Half Duplex RJ-45 Ethernet, RJ-45 Serial Port, and CompactFlash Socket interfaces.
  • What is the frame rate capability of the system?
    The system is capable of up to 60 frames per second.
  • Does the system come with a mounting kit?
    Yes, the system includes a mounting kit.

Product Review

The CISCO CTI-4505-MCU-K9 offers versatile video conferencing capabilities, supporting up to 12 participants at 720p30 or 6 at 1080p30 for symmetric sessions, and doubling the capacity for asymmetric 1080p30 sessions. It features a comprehensive range of video standards including H.261 through H.264, and provides a variety of connectivity options with 10/100/1000 Mbps Ethernet, an RJ-45 serial port, and a CompactFlash socket. However, its power consumption at 787 W and maximum heat dissipation of 2684 BTU/hour could be a concern for environments aiming to minimize energy usage and heat output.


The CISCO CTI-4505-MCU-K9 is a telecommunications hardware designed for seamless video conferencing and collaboration. This product stands out for its capacity to support a diverse range of video and audio participants, alongside its adaptability to various network speeds and standards. At the core of its video conferencing capabilities, it allows for up to 12 continuous presence video participants at 720p30 resolution or six at 1080p30/720p60. For scenarios requiring higher resolution, the 1080p30 HD+ Capacity Option enables support for another 12 participants. Additionally, it accommodates 12 more voice-only participants, enhancing the conferencing experience without compromising quality. Streaming capabilities are robust, with support for 24 unicast video streams. The product excels in multicast video streaming, offering unlimited connections, making it ideal for large-scale broadcasts or meetings. The bandwidth per site is scalable up to 4 Mbps, ensuring smooth video transmission even at high resolutions. In terms of video standards, the CISCO CTI-4505-MCU-K9 is versatile, supporting H.261, H.263, H.263+, H.263++, and H.264. This ensures compatibility across various devices and software. Frame rates can reach up to 60 frames per second, providing a fluid visual experience that closely mimics in-person interaction. Connectivity is facilitated through multiple interfaces, including a 10/100/1000 Mbps full/half duplex RJ-45 Ethernet port, an RJ-45 serial port, and a CompactFlash socket. These options ensure flexibility in network configurations and the ability to store important data or firmware updates directly on the device. The hardware dimensions are 3.43 x 17.4 x 19.25 inches, designed to fit a standard 19-inch rack mount, with a weight of 33 lbs. This makes it a manageable addition to most server rooms or networking closets. Power efficiency is a consideration, with an AC input range of 100 to 240 VAC and a frequency of 50/60 Hz. Despite its power consumption of 787 W, it manages a maximum heat dissipation of 2684 BTU/hour, keeping operating temperatures between 0 °C and 35 °C. The system's design ensures functionality in environments with up to 95% relative humidity, non-condensing. RoHS compliance confirms its manufacture with restricted hazardous substances, making it an environmentally responsible choice. The inclusion of a mounting kit and 39 status LEDs simplifies installation and monitoring. Audio features are comprehensive, including wideband audio mixing for clear sound, inbuilt and uploadable auto attendant voice prompts for easy navigation, and automatic gain control to maintain consistent audio levels. The device supports both 4:3 and 16:9 aspect ratios, accommodating various display preferences. -
  • Bandwidth per Site Up To 4 Mbps
  • -
  • Frame Rate Up To 60 Frames per Second
  • -
  • Power Consumption 787 W
  • Overall, the CISCO CTI-4505-MCU-K9 is a capable and flexible solution for organizations seeking to enhance their video conferencing capabilities, offering a blend of high-quality audio and video features, extensive connectivity options, and reliable performance.


    Part Number and ManufacturerCISCO CTI-4505-MCU-K9
    Symmetric Continuous Presence Video Participants12 participants at 720p30, 6 participants at 1080p30 or 720p60
    Asymmetric HD+ Video Participants at 1080p3012
    Additional Audio-Only Participants12
    Single-Recipient Video Broadcasting24
    Group Video BroadcastingNo Limit
    Maximum Bandwidth per Connection4 Mbps
    Supported Video ProtocolsH.261, H.263, H.263+, H.263++, H.264
    Maximum Frame Rate60 fps
    Connection Ports10/100/1000 Mbps Ethernet (RJ-45) Full/Half Duplex, Serial (RJ-45), CompactFlash
    Dimensions (Height x Width x Depth)3.43 x 17.4 x 19.25 inches
    Standard Rack Compatibility19 inches
    Device Weight33 pounds
    Power Requirement100 to 240 VAC
    Operational Frequency50/60 Hz
    Energy Consumption787 Watts
    Heat Output2684 BTU/Hour
    Operating Temperature Range0 to 35 °C
    Humidity ToleranceUp to 95% Non-condensing
    Compliance with RoHSYes
    Mounting HardwareProvided
    Diagnostic IndicatorsYes
    Total Number of Diagnostic Indicators39
    Audio CapabilitiesWideband Mixing, Pre-recorded and Custom Voice Prompts, Automatic Level Adjustment
    Supported Video Aspect Ratios4:3, 16:9

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