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Appendix
Abbreviation/ | Explanation | |
Term | ||
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BRI | Basic Rate Interface. A type of ISDN connection for | |
| transiting data, consisting of 3 channels: two | |
| (each of 64 Kbps) and one | |
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| |
Carrier | A telephone or other company that provides | |
| telecommunication transmission services. | |
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| |
CIF, 4CIF, QCIF | Common Intermediate Format, an optional part of the | |
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| CIF can be sent at frame rates of 7.5, 10, 15, or 30 per | |
| second. When operating with CIF, the amount of data to | |
| transmit cannot exceed 256 K bits (where K equals | |
| 1024).The CIF video format has the capacity to transmit | |
| video images of 352x288 pixels at 36.45 Mbps and 30 | |
| frames per second. A 4CIF format has four times the | |
| capacity of CIF; QCIF has quarter the capacity of CIF. | |
|
| |
Codec | ||
| into digital code, and vice versa. Refers to the endpoint | |
| video camera and video board that are used for | |
| videoconferencing. | |
|
| |
Conference | Connection between two or more endpoints exchanging | |
| video and audio information. If only two endpoints are | |
| involved, a conference is called | |
| MCU is required. If more than two endpoints are involved, | |
| it is called a multipoint conference, and an MCU | |
| (Multipoint Control Unit) is required as the management | |
| system. For more information, see MCU. | |
|
| |
CSU | Channel Service Unit. | |
| is used as an interface between a communication network | |
| and the data terminal. | |
|
| |
DBA | Dynamic Bandwidth Allocation. Used to allocate the | |
| bandwidth needed to transmit the additional packets. for | |
| LPR. | |
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