| V I S I O N (Video Instructional Systems Integrated for Open Networking) | |||||||||||||||||||
| Technology (Last updated:3/17/2000) | Description | Standards & Formats | Familiar Names | Typical Applications | Medium | Carrier | Quality | Reliability | Programming | Audience | Start Up Cost | Node Cost | Usage Cost | Operational Cost | Issues | Comments | UF Inventory | ||
| ï Cable TV | Analog | 1/Way | Programming modulated onto standard TV channels. | NTSC | Cox, TCI, BellSouth Entertainment, Campus TeleVideo | News, Sports, Entertainment, Instruction, Broadcast | Coax, SM Fiber, Satellite (see satellite info below) | UF or Corporate Ownership | High | High | Live, Scheduled, On Demand, Pay-Per-View | City, Campus, Building | Very High | Low | None to Low | Moderate | Infrastructure, Location, Programming Costs | Used by Business, Journalism, Housing, JWRU, Advising, Engineering, UAA | OIR/CIRCA, Housing, Cox, Journalism |
| 2/Way | Programming modulated onto standard TV channels with Two-Way capability. | NTSC | TCI, Scientific Atlanta | Videoconferencing, News, Sports, Entertainment, Instruction, Broadcast | Coax, SM Fiber | UF or Corporate Ownership | High | High | Live, Scheduled, On Demand, Pay-Per-View | City, Campus, Building | Very High | Low to Moderate | None to Low | Moderate to High | Infrastructure, Location, Programming Costs, Maintenance, Privacy | Primarily used in Distance Learning environments | - | ||
| Digital | 1/Way | Digitized programming sent to Set-Top Boxes or Digital-Ready TVs. | NTSC, OpenCable, 64-QAM, 256-QAM, MPEG-2 | COX, TCI, General Instrument, Scientific Atlanta | News, Sports, Entertainment, Instruction, Broadcast | Coax, SM Fiber | UF or Corporate Ownership | High | High | Live, Scheduled, On Demand, Pay-Per-View | City, Campus, Building | Very High | Low to Moderate | None to Low | Moderate | Infrastructure, Location, Programming Costs | Offers increased channel capacity | OIR/CIRCA for COX, WUFT | |
| 2/Way | Digitized programming sent to Set-Top Boxes or Digital-Ready TVs with Two-Way capability. | NTSC, OpenCable, 64-QAM, 256-QAM, MPEG-2, DOCSIS | COX, TCI, General Instrument, Scientific Atlanta | Telephony, Internet, Videoconferencing, News, Sports, Entertainment, Instruction, Broadcast | Coax, SM Fiber | UF or Corporate Ownership | High | High | Live, Scheduled, On Demand, Pay-Per-View | City, Campus, Building | Very High | Low to Moderate | None to Low | Moderate to High | Infrastructure, Location, Programming Costs, Maintenance, Privacy | Return path used for Internet, Telephone Service and On-Demand requests | - | ||
| ï H.320 | Dedicated | Videoconferencing over dedicated lines with monthly charges. | PictureTel, Polycom, Tandburg, Vtel, Sony | Videoconferencing, Whiteboard, Application Sharing | Twisted Pair Phone Line | Public Telephone Network | Moderate to High | High | Live, Scheduled | State Backbone, Point to Point | High | Moderate to High | None | Moderate | Location | HSC, IFAS, OEEP | |||
| Switched | Desktop | Videoconferencing over dial-up lines with long distance charges. | PictureTel, Polycom, Tandburg, Vtel, Sony, Intel | Videoconferencing, Whiteboard, Application Sharing | Twisted Pair Phone Line | Public Telephone Network | Moderate to High | Moderate to High | Scheduled, On-Demand | World | High | Moderate to High | Low to Very High (Per Minute) | Low to Moderate | Location | HSC | |||
| Room | Videoconferencing over dial-up lines with long distance charges. | PictureTel, Polycom, Tandburg, Vtel, Sony | Videoconferencing, Whiteboard, Application Sharing | Twisted Pair Phone Line | Public Telephone Network | Moderate to High | Moderate to High | Scheduled, On-Demand | World | High | Moderate to High | Low to Very High (Per Minute) | Low to Moderate | Location | OEEP, HSC, UFBI, Physics | ||||
| H.320 MCU | Multipoint Control Unit to enable 3 or more participants to Videoconferencing over T1 or ISDN. | Lucent, RadVision, Accord | Videoconferencing | Twisted Pair Phone Line | Public Telephone Network | N/A | Moderate | Scheduled | World | High to Very High | N/A | None if owned | Low | Transcoding, Continuous Presence | HSC | ||||
| ï 320/323 Gateway | Allows Videoconferencing directly between H.320 and H.323 by transcoding. Often built into an MCU. | ITU, H.245, Q.931 | Datapoint, PictureTel, RADVision | Videoconferencing | Fiber, Twisted Pair | UF or Corporate Ownership | Variable | Variable | Scheduled, On-Demand | World | Moderate | Low to Moderate | None to Moderate | Moderate | Access Control, Management Integration, Emerging Technology | - | HSC | ||
| ï IP Video | H.323 | Desktop | Software based Videoconferencing over the Internet. | Microsoft NetMeeting, CU-SeeMe, DataBeam | Videoconferencing, Whiteboard, Application Sharing | Twisted Pair, Fiber, Wireless | Internet, I2 | Low to Moderate | High | Live, Scheduled, On-Demand | World | Low | Low | None | Low | Directory | Can be software only or hardware-assisted | IFAS, HSC, Business | |
| Room | Hardware based Videoconferencing over the Internet. | Intel, VideoconferencingON QuickConnect, PictureTel 950, VTEL Enterprise | Videoconferencing, Whiteboard, Application Sharing | Twisted Pair, Fiber, Wireless | Internet, I2 | Low to High | High | Live, Scheduled, On-Demand | World | Low to High | Low Cost Camera on Existing PCs | None | Low | Impact on Data Backbone | HSC | ||||
| Gatekeeper | Provides a directory, address translation and access control. | DataBeam, Precept, VideoServer | Videoconferencing | Twisted Pair, Fiber, Wireless | Internet, I2 | N/A | High | N/A | World | Low to Moderate | N/A | None | Low | IFASIT(ILS only) | |||||
| MCU | Multipoint Control Unit to enable 3 or more participants to Videoconferencing over the Internet. | DataBeam, Precept, VideoServer | Videoconferencing | Twisted Pair, Fiber, Wireless | Internet, I2 | N/A | Moderate to High | Scheduled, On-Demand | World | Moderate to High | N/A | None | Low | Impact on Data Backbone | Library | ||||
| Proprietary | Stand-alone codec that connects directly to the network. | Fore, K-NET, Optivision, IVideoconferencing, VideoconferencingON | Instruction, Videoconferencing, Broadcast | Twisted Pair, Fiber, Wireless | Internet, I2 | Moderate to High | High | Live, Scheduled, On-Demand | World | Moderate | Moderate | None | Low | Impact on Data Backbone | HCS Lab | ||||
| Streaming / Download | Live | Encoded live content viewable over the Web. | Real, VideoCharger, QuickTime, Windows Media | Instruction, Broadcast | Twisted Pair, Fiber, Wireless | Internet, I2 | Poor to High | Moderate to High | Live | World | Low to High | Existing PC's with appropriate player | None | Moderate | Can be synchronized to Power Point presentations | OIR/CIRCA, HSC, UFBI | |||
| On Demand | Encoded prerecorded content viewable over the Web. | Real, VideoCharger, QuickTime, Windows Media | Instruction, Public Relations | Twisted Pair, Fiber, Wireless | Internet, I2 | Poor to High depending on bandwidth | High | Prerecorded, Scheduled, On-Demand | World | Low to High | Low to Moderate | None | Moderate | High use can impact backbone, quality depends on users available bandwidth. | Can be synchronized to Power Point presentations | Business, HSC, IFAS, OIR/CIRCA, ECE | |||
| ï Satellite | DBS (Digital) | Downlink | MPEG 2 digital video sent to users via 18" dish. | DISH, DirecTV, Primestar | News, Sports, Entertainment, Instruction | Microwave | Corporate Satellite | High | High | Live, Scheduled | North and Central America | Low | Low | None | Low | ||||
| Uplink | Commercial uplink facilities. | DISH, DirecTV, Primestar | News, Sports, Entertainment, Instruction | Microwave | Corporate Satellite | High | High | Scheduled | North and Central America | Very High | Moderate to None | None to Moderate | Low | License | Major cost is in feeding signal to uplink site, I2 feed may be possible. | ||||
| Commercial (Digital, Analog) | Downlink | Direct to user via 10' Dish and analog or digital receiver. | General Instrument, Drake | News, Sports, Entertainment, Instruction | Microwave | Corporate Satellite | Very High | High | Live, Scheduled | North and Central America | High | Moderate | None | Low | Infrastructure, Location | OIR/CIRCA, WUFT, IFAS, HSC, JWRU, TREEO, N&PA | |||
| Uplink | 12' Dish and high power transmitter; analog or digital. | Florida DOE | News, Sports, Entertainment, Instruction | Microwave | Corporate Satellite | Very High | High | Scheduled | North and Central America | Very High | Very High | Very High | High | N&PA Analog | |||||
| VSAT (Digital, Two-way) | 12' Dish and high power transmitter; analog or digital. | Florida DOE | News, Sports, Entertainment, Instruction | Microwave | Corporate Satellite | Very High | High | Scheduled | North and Central America | Very High | Very High | Very High | High | ||||||
| ï Microwave | Point to Point | Point to point audio and video link. | Studio to transmitter link | Microwave | Radio Frequency | High | High | Live, Scheduled | Single location | Very High | Very High | None | Moderate | WUFT,WRUF | |||||
| ITFS / MMDS | One way multi-channel wireless television. | Instructional Television Fixed Service | Instructional TV | Microwave | Institutional Ownership | High | Moderate to High | Live, Scheduled | 25 - 30 Miles | Very High | Low | None | Moderate | HSC (Jacksonville) | |||||
| ï Other Video Transmission Methods | Video transmitted in other ways. | Baseband, SDI, Digital over Fiber, 8-bit, 10-bit | Fiber Options, X-10, Tektronics, Optibase, Grass Valley | Feed from origination site to broadcast, cable, uplink or other location. | Coax, Fiber, Twisted Pair, Wireless | UF Infrastructure | Very High | High | Live, Scheduled | City, Campus, Building | High | Moderate to High | None | Low | Compatibility | Many different formats, advantages and disadvantages. | OIR/CIRCA, IFAS, Business, OEEP,HSC, UFBI, WUFT | ||
| ï Broadcast Television | Digital | Over the air transmission to digital television receivers. | 8-VSB, 16_VSB | WUFT, WCJB, WOGX | News, Sports, Entertainment, Instruction | Radio Frequency | Corporate Ownership | High | High | Live, Scheduled | 25-50 Miles | Very High | Low | High | High | Migration to Digital required by FCC. | |||
| Analog | Over the air transmission to standard television sets. | NTSC | WUFT, WCJB, WOGX | News, Sports, Entertainment, Instruction | Radio Frequency | Corporate Ownership | High | High | Live, Scheduled | 25-50 Miles | Very High | Low | High | High | WUFT | ||||
| ï Videotape/DVD/CD | Video recording physically distributed to users. | VHS, SVHS, U-MATIC, 8mm, Hi8, MiniDV, BetaCam, VHS-C | Blockbuster, OEEP | Instruction, Entertainment | Magnetic Tape, Digital Disk | UPS, US Mail | High | High | Scheduled, On-Demand | World | Moderate | Low | Low | Low | OIR, OEEP, HSC, IFAS, Business, UFBI, Library, DD, CT Continuing Ed. | ||||