电信专业英英词典C-2

Cassegrain Antenna - An antenna that places a subreflector at the focal point to reflect energy to or from a feed located at the apex of the main reflector. CB - This stands for Citizen's Band and is

电信专业英英词典C-3

City Code - Some foreign countries require you to dial a city code before the phone number you are trying to reach. Clamp - A circuit that removes the energy dispersal signal component from the video

电信专业英英词典C-7

Channel A channel is a single communications path in a transmission medium connecting two or more points in a network, each path being separated by some means; e.g., spatial or multiplex separation, s

电信专业英英词典C-8

Codec Codec is a contraction of coder and decoder; a device that encodes analog signals into digital signals, for transmission through a network in digital format, and decodes received digital signals

电信专业英英词典D-2

Delay - This is the wait time between to specific events, and regarding satellite communications, it is the time it takes for a signal to go from the transmission station up to orbit and through the s

电信专业英英词典P-2

PPSN public packet switched network Premises Distribution System (PDS) PDS is the transmission network inside a building or among a group of buildings, for example an office park or a campus. PDS is u

电信专业英英词典Q

电信专业英英词典S-1

SAFENET survivable adaptable fiber-optic embedded network Satellite Communications Satellite communications entails microwave radio, line-of-sight propagation from a transmitting earth terminal (i.e.,

电信专业英英词典S-2

Simple Network Management Protocol (SNMP) SNMP is the application protocol offering network management service in the Internet suite of protocols. A structure for formatting messages and transmitting

电信专业英英词典S-3

SSN switched service network SS signaling system Station Equipment Station equipment is a component of telecommunications systems such as a telephone or data terminal, generally located on the user's

电信专业英英词典T-3

Transmission Facilities Transmission facilities provide the communication paths that carry user and network control information between nodes in a network. In general, transmission facilities consist

电信专业英英词典1-10

128-bit Encryption - The latest Internet security standard for e-commerce and financial transactions, 128-bit encryption scrambles any data you send to a secure Web site (like TDS ePay) so that no one

电信专业英英词典H-1

Half Duplex Half duplex is a transmission path capable of transmitting signals in both directions, but only in one direction at a time. HDLC high-level data link control Header The header is control i

电信专业英英词典I-2

International Organization for Standardization (ISO) ISO is a worldwide federation of national standards bodies (ISO National Bodies). The work of preparing international standards is normally carried

电信专业英英词典L-2

Loop Length Typically, loop length is a complete electrical circuit; the pair of wires that winds its way from the central office to the telephone set or system at the customer's premises. Loop Signal

电信专业英英词典F-4

Frame In time division multiplexing systems, Frame is a sequence of time slots each containing a sample from one of the channels carried by the system. The frame is repeated at regular intervals, (nor

电信专业英英词典E-2

Email - This is electronic-mail, that is text messages that are sent over the internet. Emoticons - This is a contraction meaning emotional icon that is made with common characters, such as :-) being

电信专业英英词典E-1

Earth Station - The term used to describe the combination of antenna, low-noise amplifier (LNA), down-converter, and receiver electronics that are used to receive a signal transmitted by a satellite.

电信专业英英词典D-4

D type Channel Bank A D type channel bank is channel termination equipment used for combining (multiplexing) individual analog channel signals on a time division basis. D type channel banks provide in

电信专业英英词典A-2

Analog - Transmitting information that is characterized by continuously variable quantities (such as with AM or FM). This is different from digital transmission, which is characterized by discrete bit