K-20 Videoconferencing Support Glossary

AppsView - VTEL's Windows, based customizable user interface.

Ascend - A brand name for equipment.

AUP - Acceptable Use Policy - A statement by an organization participating in a network, as to what kinds of uses are acceptable for traffic over the network that relies on or uses hardware, software, services, or content (file) provided by the organization.

Bandwidth - Rate of information flow The amount of transmission capacity. The higher the bandwidth, the more data that can be transmitted at the same time.

BONDING - Bandwidth On Demand Interoperability Group using several smaller channels instead on one large channel to connect.

Bridge - Specialized equipment, in K20's case, an MCU, which connects or bridges, two or more networks together.

Bridging - Connecting dedicated sites and/or dial-up sites from any location via a MCU.

Broadcast with Scan - If a presenter does not want interaction during a conference, but would like to see and not hear the other sites, Broadcast w/Scan are an option. The presenter or broadcaster chooses a scan rate of 5 to 240 seconds, and will see the other sites at that predetermined rate. Remember this is an option available when scheduling on KORRS.

Chair Control - Allows the participants to define a chairperson, allowing the chair to grant the floor to a specific site and also determine who will be seen at any given time during the conference.

CLI - Compression Labs Incorporated - VC room systems, now a part of VTEL.

Continuous Presence - This is a variation of Voice-Activate switching. Continuous Presence breaks the network image into quadrants. If there are five sites in the multipoint conference, CP will display four of them in the quads on screen. When the fifth site speaks, the site, which spoke the longest time ago, will be “bumped” to make way for the site number five. It works under voice-activated switching, so any site who is switched to, will enter on of the quads.

Desktop - The background area on a computer where all applications, icons, and dialog boxes appear.

DIS - Department of Information Services, Washington State government agency

DITU - The District Institutional Unit is a district network support individual who has been identified as the K-20 point of contact for problem identification in the district.

Echo Canceller - A device which gates the audio signal coming into a room and removes any repetitive elements of the signal from the audio input and output to eliminate echo “feedback”.

ESA - VTEL's platform name for the Enterprise Series Architecture system.

ESD - Educational Service District, there are 9 in Washington State

FECC - Far End Camera Control controls the camera at the far end site in a point -to-point call provided the system supports it.

H.320 - ISDN videoconferencing standard

H.323 - IP (Internet Protocol) videoconferencing standard

IMUX - See Inverse Multiplexer

Interactive -The communication where all participating sites have equal capability. Interactive videoconferencing permits all sites to see and hear one another.

Institutional Technical Unit (ITU) - The institutional technical unit (ITU) provides support to districts in determining the cause of a technical problem. The ITU can and will assist in assessing problems within a district as well as working with KOCO to determine if the problem is within the K-20 network.

Internet - The Internet is a cooperative public network of shared information.

Intranet - A private network that relies on the same network standards and protocols as the public Internet, to allow similar, closed functionality using standardized Internet and World Wide Web tools.

Inverse Multiplexer - Network equipment that provides dial-up capability on dial-up T-1’s.

IP - Internet Protocol

ISDN - Integrated Services Digital Network

ISP - Internet Service Provider

ITU-Washington - See Institutional Technical Unit

K-20 Operations Cooperative (KOCO) - This is the operational arm of K-20. It consists of the University of Washington , Department of Information Services (DIS) Telecommunications Services Division (TSD), and DIS Interactive Technologies (DIS IT). These K-20 operational units resolve K-20 network problems.

K-20 Network - The K-20 network is a statewide network for Intranet, Internet and interactive video services to all K-12 school districts, community colleges and baccalaureates.

KOCO -See K-20 Operations Cooperative

LA - Link Available - On the front of the Ascend Multiband the LA light indicates that there is a connection to the Ascend.

LAN - Local Area Network - A private computer network of desktop workstations that may share data, printers, including video, voice communications, etc.

LCD - Liquid crystal display

Loopback - A diagnostic test that returns the transmitted signal back to the sending device. The returned signal can then be compared to the transmitted one. The test number for profile 007 is 2062219111 and the test number for profile 009 is 2062219109.

MCU - See Multipoint Control Unit

Minimize - Shrinking a window down to a title on the task bar. Done by clicking on the minimize button in the upper-right corner.

Mouse - A pointing device that controls the movement of the cursor on a screen.

Multipoint VC - A videoconference of three or more sites.

Multipoint Control Unit (MCU) - A device which allows more than two or more sites to be connected in a videoconference. Sometimes called a bridge.

NTSC - National Television Standards Committee - USA's color TV transmission standard.

OSPI (or SPI) - Office of Superintendent of Public Instruction. This state agency is responsible for K-20 Network implementation and utilization throughout K-12. It is a responsive advocate and provides strategic technology direction for K-12 districts, oversees K-12 ITU, ATS and engineering support functions to assure a viable K-20 system for K-12 districts.

Peripheral device - An external device, such as a printer, a disk drive, or a keyboard, connected to a computer. Also can be a VCR, document camera, or another camera.

PenPal Graphics tm - VTEL's unique kind of interactive conferencing, where individuals share information, ideas, and tasks on whiteboards or slides.

PC - Personal Computer (PC)

PIP - Picture In Picture - Two separate video images appearing on one monitor.

Profile - Type of call that a videoconference connects with.

Presentation Mode - The switching technique is similar to voice-activated, but adds a useful twist. A pre-selected site is chosen to be the presenter. The other sites in a conference, regardless of who is speaking will ALWAYS see that Presenter site. The people at the presenting site will see the other sites switch normally, but those other sites will only see the presenter, no matter who speaks.

RITU - The Regional Institutional Unit is an Educational Service District (ESD) based network support individual who has been identified as the K-20 point of contact for problem identification in the ESD’s districts. The RITU supports those districts that can not afford or do not desire to sponsor their own DITU. The RITU can and is expected to work directly with the KOCO.

RPM - Remote port module connects video equipment to IMUX through building wiring.

Scan Converter - Converts video signal from a computer and alters it to a NTSC signal so it can be displayed on a TV monitor.

Shut Down - Option in Start Menu of PC that is the correct way for powering down the system.

SMART Board - VTEL's Electronic SmartBoard from SmartBoard Technologies that interacts with the PenPal graphic functions of the ESA.

Start Menu - On Microsoft Windows® PCs it enables you to activate programs by using menu icons. The Start Button, located at the bottom left corner of the monitor screen, presents information via expandable menus menus.

Switched Network - A network in which any site can dial the K20 Network is a switched network.

T1 - A transmission line is a bundle of 24 twisted pairs. Your home phone uses a twisted pair.

Task bar - An area that lies along the bottom of the PC screen and lists what windows are currently open.

Touch Panel - Touch sensitive controller for the VC system

Touch Screen - See Touch Panel

Transmission speed - The data rate for video conferencing, usually expressed in kilobits per second.

Universal Conference Control - UCC is a feature that supplements the various conference types. It works via a telephone cal into the multipoint. By using various, short number sequences on the phone’s key pad, you can give instructions to the multipoint unit for example to over ride switching, toggle between full screen and continuous presence, drop sites and end conferences.

V.35 - The transmission interface between the codec and the transmission link that permits switched 56 connectivity. Network communication standard that is used by some videoconference systems.

VC - Videoconference

VCR - Video Cassette Recorder

VGA - Visual Graphics Array - The signal from a computer's CPU to its monitor.

Videoconferencing - Two-way, full motion, full color, electronic form of communications that permits two or more people, in two or more different locations to engage in face to face audio and visual communication.

Voice Activated Switching (VAS) - This is the most common type of MCU switching. It simply means that the multipoint switches to whoever is speaking. If more than two sites speak or make noise at the same time, the multipoint will switch to the loudest site.

WAN - Wide Area Network

Whiteboard - Allows sharing of a variety of data (pictures, sketches, spreadsheets etc.) in an information window which is part of videoconferencing system.

Window - An onscreen box that contains information on a computer.

WSIPC - Washington School Information Processing Cooperative