Products > Legacy Systems > Codian > MCU 4500 Series

Codian (Tandberg) - MCU 4500 Series (High Definition)

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The MCU 4500 series is the only conferencing bridge to deliver a true, High Definition multimedia experience. Without compromise or limits this MCU supports the highest video resolution, speed, frame rate and codec of the latest HD endpoints. This includes full continuous presence for all conferences, including those with a mix of both HD and standard definition (SD). With it’s embedded gatekeeper, you configure your own dialing plan with options to include up to 300 registered devices. A built-in web server allows for easy access to system settings. User privilege levels are configurable to allow for simple conference viewing via web stream as well as conference customization based on your specific needs. The 4500 series is a superior choice for those who demand the highest quality and performance from their video conferencing infrastructure.

High Definition MCU Models 4505 4510 4515 4520
Video Endpoints 5Mbit/s each 12 20 30 40
Additional Audio Participants 12 20 30 40
Video Streaming Unicast/Multicast 24/unlimited 40/unlimited 60/unlimited 80/unlimited

Enhanced Features:

Video Firewall Option (VFO)

  • The second Ethernet port allows callers from both inside and outside the network to meet on the bridge, leaving your firewall untouched and your security levels unchanged.

Web Conferencing Option (WCO)

  • Add data, such as slides, chat and annotations to standard video and voice streaming giving each participant an interactive experience regardless of how they connect.

Gatekeeper Option (GKO)

  • Increase from 25 to 100 or 300 registrations with built-in H.323 gatekeeper
Software Options
VFO-4500 Video Firewall Option - Allows MCU connection to
additional networks (e.g., Internet)
WCO-4505, WCO-4510, WCO-4515, WCO-4520 Web Conferencing Option - Provides content streaming,
annotation, and chat capabilities
GKO-100, GKO-300 Increase from 25 to 100 or 300 registrations with built-in H.323 gatekeeper


High Definition Performance

  • 720p 30 fps H.264 5 Mbps continuous presence • Future options will allow 1080p 30 fps and 20p 60fps • Comprehensive HD audio • HD dual video H.239

Video Standards

  • H.261, H.263, H.263+, H.263++, H.264

Video Resolution

  • From QCIF up to 720p (1280 x 720) including interlaced iCIF and iSIF • 4:3 and 16:9 aspect ratios

Frame Rates

  • 30 frames or 60 fields per second

Audio Standards

  • G.711, G.722, G.723.1, G.728, G.729, MPEG4 AACLC, MPEG4 AACLD, Polycom® Siren14™ / G.722.1 Annex C


  • H.323 v4, SIP, H.235 (AES), H.239 (dual video), VNC™, FTP, RTP, RTSP, HTTP, DHCP, SNMP, NTP


  • Up to 5 Mbps with both H.263 and H.264, for each site in all conference modes including advanced (symmetric) continuous presence

Universal Transcoding and Transrating

  • Combine HD and SD within the same conference
  • Automatic audio / video transcoding and transrating on all calls
  • Any bandwidth, any resolution, any video or audio codec can be used on any video call within the same conference
  • Each participant has their own personal encode • Extremely low latency; less than 80 ms

Streaming Video

  • Builtin streaming server
  • View using Windows Media Player™, RealPlayer™ or QuickTime™
  • Streaming of slides (H.239 and VNC™)
  • Text chat
  • Unicast and multicast
  • UDP, TCP or HTTP
  • Independent choice of bandwidth and codec

MCU Features

  • Dial in or dial out via web server
  • Standalone or using gatekeeper
  • Configurable audio and video auto attendant
  • Advanced continuous presence as standard on all ports
  • Individual layout selection using remote control or web pages
  • Over 50 custom layouts
  • Widescreen (16:9) support
  • Active speaker selection using remote control or voice activated
  • Floor assignment through web page or management application
  • Far end camera control tunneling using remote control or web
  • Text identification of sites
  • Onscreen text messaging to individual or all sites
  • Builtin conference scheduling and reservation
  • Ondemand and ad hoc conferences
  • Dual video using H.239
  • Presentation mode: add slides from PC using VNC™
  • Preview of conference and individual camera on web pages
  • Web Conferencing Option  those without endpoints can still interact
  • Uploadable bitmaps for voice participants
  • Video association for IP and traditional PBXs

Audio Features

  • Wideband audio mixing
  • Builtin and uploadable auto attendant voice prompts
  • Automatic gain control, adjustable gain, power indication, individual audio mute
    using web pages

Builtin Web Server

  • Complete configuration, control and monitoring of the system and conferences

Builtin Gatekeeper

  • Resolution of E.164 numbers
  • Registration of conferences, endpoints and gateways
  • Up to 25 devices can register, options to extend this to 100 or 300 devices

System Management

  • XML management API
  • Management via embedded web server
  • RS232 for local control and diagnostics
  • Syslog for diagnostics
  • Configurable event logs and full H.323 and SIP decoding
  • Configuration backup to network
  • Secure upgrades through Ethernet or CompactFlash
  • Call Detail Records
  • SNMP

Security Features

  • Seven levels of access rights and privileges for users
  • Passwordprotected conferences
  • Secure nonPC hardware and operating system
  • AES encryption, 128 bit key, H.235
  • Video Firewall Option using second Ethernet port


  • 2 x RJ45 Ethernet, 10/100/1000 Mbps full/half duplex, manual or auto sensing
  • RJ45 serial port
  • CompactFlash socket
  • 39 status LEDs

Physical Dimensions

  • Height 3.43”, 87 mm (2U), Width 17.4”, 442 mm
  • Depth 19.25”, 489 mm, Weight 22 lbs, 15 kg
  • 19” rack mountable (kit supplied) or standalone
  • Power 100240 VAC, 50/60Hz
  • 600W maximum power consumption

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