MD6000 from Media Links
Uncompressed Long Haul HD TV
The MD6000™ provides high performance video transport system over SDH/SONET Networks. Advanced technologies, including error correction, hitless protection switching, and differential delay adaptation allow flawless transport of the most demanding types of video signals. Uncompressed HD-SDI, SD-SDI, SDTI, STM-I and DVB/ASI signals along with 10/100BT Ethernet can all be transported over a variety of networks, including OC-48/STM-16, OC-192/STM-64 or dark fibre.
Hitless Protection Switching ensures delivery of pure, uninterrupted video signals even if the underlying SONET/SDH or IP network suffers a momentary outage or a 50msec protection switch. By using redundant paths, and performing a packet-by-packet comparison of the incoming signals, the MD6000 can prevent minor or major network faults from impacting valuable video signals.
IP technology is key to the performance of the MD6000. Every incoming signal is divided into standard IP packets prior to transmission. This benefits users in several ways:
- Forward Error Correction can be applied to each packet, eliminating the few inevitable bit errors that occur on fibre optic links
- Packet sequence numbers allow rapid, automatic detection of lost or delayed packets, which can be corrected with hitless switchover.
- Smooth migration path from traditional SONET/SDH networks to IP core networks can be easily accomplished through an available software upgrade to support PPP protocol or to support Media Links video routers.
This approach also avoids the issues that can result from compressed video, including:
- Delays in both the encoding and decoding process
- Hidden compression artefacts in the video image
- Painstaking process to match encoding parameters to video/audio/data signal source with uncompressed video, its just "connect and go" regardless of the video format and frame rate - 1080i, 720p, 525/625 line, 50, 60 or 59.94 Hz, plus all types of embedded audio and data
Key Capabilities
- Long haul uncompressed HD TV video transport across SONET/SDH and IP Networks
- Hitless Protection Switching
- Bit rate up to 1.5Gbps
- IP Encapsulation
- Bi-directional Functionality
- Automatic Error Detection
- Reed Solomon Error Correction
- Interleaving
- Minimal End-to-End Delay
Key Interfaces
- Tributary Interfaces:
- Uncompressed HD-SDI/SD-SDI/DVB-ASI
- SDTI (SMPTE 305)
- 10/100 Base T Ethernet
- OC-3/STM-I
- Network Interfaces:
- OC-48/STM-16
- OC-192/STM-64
- Point-to-point fibre
Related Components
- Video Interface Module - One card handles all types of serial digital video, including SD-SDI, DVB-ASI, SDTI and HD-SDI. Each card is bi-directional, capable of simultaneously sending and receiving any signal type (even different types in each direction).
- STM-I + Video Module - This multifunction card carries a full bandwidth, bi-directional OC-3/STM-I plus a 90 Mbit/sec DVB-ASI signal in each direction. This card can support all major types of 155 Mbit/sec signals, including ATM, IP, voice, compressed video, and audio.
- HD-DPCM - This module accepts HD-SDI and utilizes high quality DPCM compression to reduce the signal rate to approximately 1Gbps which allows two HD-SDI signals and one SDI signal to be transported on an OC-48/STM-16.
- SD-DPCM - Utilises ITU J.81 DPCM compression to accept 2 SDI signals and carry them in half of the bandwidth providing twice the signal carrying capacity.
- IP Switch Modules - The heart of the MD6000 system, these cards generate the high-speed output signals for a shelf full of video and data interfaces. One IPSW is enough to run the entire shelf; two are required for hitless protection switching over a redundant network. Two versions are available: the 2.4G model for STM-16/OC-48 networks, and the 10G model for STM-64/OC-192 networks.
- Ethernet User Interface Board - The MD6000 Ethernet user interface module includes three 10/100BT Ethernet ports and one 10BT port. Four RJ45 connectors are located on the rear connector module. The MD6000 provides full bandwidth, full duplex point-to-point Ethernet connections between shelves.
Sample Uses
- International HD TV Broadcast - where reliable HD TV signals need to be transported internationally to a wide range on national broadcast companies, such as major sporting events like the Olympics or World Cup football.
Sample Customers
- BBC
Media Links website - MD6000