补充: Gateway - A system that translates incompatible networks or applications. Gateway is also commonly used to refer to any system that provides access to another system. GMSS - General Manager,...
Ground - Connecting the Earth to electrical equipment with a conductor. This is done so current overloads (perhaps due to a lightning strike) can be safely diverted to the Earth. Ground Fault Circuit...
Gain - This is an increase in signal power, due to a boost from an electronic device. Garbage - These are unwanted characters that appear because of either incorrect settings or noise. Gate - These ar...
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...
补充: FAQ - An acronym for Frequently Asked Questions. FAQs are online documents that list and answer the most common questions on a particular subject. Federal Excise Tax - A 3% tax mandated by t...
Focal Length - Distance from the exact center of the dish to the center of the feed. Focal Point - The physical point in space toward which the satellite reflector dish directs the received signal so...
Fade - This is a reduction in the received signal. It is caused by absorption, refraction, or reflection. Fax - This is a shortening of Facsimile, and it refers to one fax machine sending a digital re...
EMI electromagnetic interference; also, exchange message interface End Office (EO) EO is a LEC (BOC or an ITC) switching system within a LATA where local loops to customer stations are terminated for...
补充: E-1 - The European equivalent of a T-1. E911 Taxes/Surcharges - This tax is set and imposed by local governments to help pay for the cost of an emergency response communications system that...
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...
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....
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Direct Inward Dialing (DID) DID is PBX-to-central office trunks that allow incoming calls to a PBX to ring specific stations without attendant assistance. DID greatly reduces the number of required co...
DCE data circuit terminating equipment DCP digital communications protocol DCS digital cross-connect system DDD direct distance dialing DDN Defense Data Network Digit L Digital L is another amplitude...
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...