Tandberg | Video on Frame Relay |
framer both at the ACT-recommended setting of 256 bytes and at 1.500 bytes (which is in line with the recommendations of other framer users) without any difference in the overall performance.
You can connect either the VFX-250S or the ABL VT2C directly to a DSU/CSU on a frame relay network. The two products have another common trait: If you intend to share the video stream with other types of traffic, you'll need to connect the VFX-250S or ABL VT2C to one of the inputs on a FRAD or router acting as a frame relay switch.
5.About the Product VFX-250S
The VFX-250S product series from Science Dynamics Corporation offers a cost- effective solution to the packetisation of continuous data bit-streams. The world of frame relay users is becoming larger day by day, as are the different uses of frame relay services. Corporate customers are adopting frame relay as a medium for many different types of communication. The advent of FRADs has enabled users to integrate LAN-to- LAN connectivity, inter-office voice communications, IBM SNA traffic, etc. over a single frame relay circuit. The advantages of integration are, quite obviously, cost. The transmission of video over any digital network requires the use of video encoders/decoders (referred to as Codecs). Most video codecs, however, are designed to run on "leased line" or ISDN type services which provide a transparent path for continuous bit streams. Now, Science Dynamics brings support for the transportation of continuous data bit-streams (such as H.320) over a frame relay service in the form of a standalone unit. In this application the VFX-250S provides the continuous bit stream required by video codecs and permits continuous bit stream access for frame relay service providers (FRADs). The VFX-250S is a ‘desktop’ enclosure, with AC power, which can be incorporated into an existing network providing an instant upgrade to frame relay networking facilities.
