and ABBREVIATION DICTIONARY Networks and Telecommunications/Electronics -->J,K ~ all in all

ABBREVIATION DICTIONARY Networks and Telecommunications/Electronics -->J,K

J

JPEG
Joint Photographic Experts Group. A format for image files. JPEG compresses an image into small blocks, which are divided to get the desired ratio; the process is reversed to decompress the image. JPEG format is preferred over GIF files for the storage and transmission of color and grayscale photographs.




Java
An object-oriented programming language developed by Sun Microsystems, Inc. used to create applets that can be distributed over the World Wide Web. Java programs run inside a Java-enabled Web browser; otherwise they run inside a Java Virtual Machine (JVM). Kbps




Java-Based Pipeline Configurator (JBPC)
A graphical, "point-and-click" program that allows network administrators and end users to configure, save, and restore configurations to Pipeline 50, 75 and 85 units over the same Ethernet connection that is used to pass network traffic.


K

K56flex
A 56-Kbps modem specification developed by Rockwell and Lucent for calls between a digital modem and an analog modem. K56flex allows 56-Kbps data transfers on the downstream portion of a call, and 33.6-Kbps data transfers on the upstream portion.







KB
Kilobyte(s). 1024 bytes.







Kbps
A transmission speed. Kilobits (thousands of bits) per second.







Keepalive
A message used by the link management interface (LMI) of a frame relay port in order to verify link integrity.







Keepalive Registration
In a MultiVoice system, a process by which a Lucent unit reregisters with its currently registered gatekeeper at a specified interval.







Key
A data string, normally a number consisting of 40 to 168 bits, which when combined with the source data (a packet) according to a special algorithm, produces output that is unreadable to anyone without the corresponding key. Keys are used in both cryptography (encryption and decryption) and authentication hashing algorithms.







Key System
Customer premises equipment (CPE) used to route calls both within an organization and to and from the outside telephone network. A key system is a scaled-down version of a PBX, usually with less functionality, and is geared toward smaller organizations. A key system can be either analog or digital. Some digital key systems can terminate digital as well as analog connections. Moreover, key systems work in conjunction with channel banks to distribute channels from the T1/E1 circuit for voice, video, fax, and data.







khz
Symbol for kilohertz (one thousand hertz)







Kilobytes (KB)
A kilobyte defined as 1,024 bits







Ku Band
A portion of the radio frequency spectrum. Communication satellites operate on Ku-band frequencies from 14.0 to 15.5 GHz for uplinks and 12.2 to 12.7 for downlinks. DBS satellites operate on Ku-band frequencies from 17.3 to 17.8 GHz for uplinks and 12.2 to 12.7 GHz for downlinks.








 


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