Network Considerations
Network requirements should be considered carefully.
- Minimal bandwidth requirements per stream for TANGO: Audio 13kb/s, Video 15 kb/s, Courseware 120 kb/s.
- Audio: instructor’s workstation sends one stream to each BV audio client. If students use headsets, this is one client per student.
- Video: transmitted point-to-point like audio.
- Courseware: the web server delivering slides/pages to student browsers. This will be point-to-point, unless the lab has a proxy web server.
- Check network configuration to see how sites are connected. Be prepared to call network provider companies if routers are not behaving properly.
- Calculate bandwidth requirements. E.g. a T1 line (1.5Mb/s) can carry 100 a/v streams or 10 simultaneous course pages in the absence of any other traffic.