- Industry: Telecommunications
- Number of terms: 29235
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ATIS is the leading technical planning and standards development organization committed to the rapid development of global, market-driven standards for the information, entertainment and communications industry.
The ratio of (a) the number of bits, unit elements, characters, or blocks incorrectly received but undetected or uncorrected by the error-control equipment to (b) the total number of bits, unit elements, characters or blocks. 2. The error ratio that remains after attempts at correction are made.
Industry:Telecommunications
The ratio of (a) the maximum real power consumed by a system to (b) the maximum real power that would be consumed if the entire load connected to the system were to be activated at the same time. Note: The maximum real power is usually integrated over a specified time interval, such as 15 or 30 minutes, and is usually expressed in kilowatts. The real power that would be consumed if the entire load connected to the system were to be activated at the same time is obtained by summing the power required by all the connected equipment. This load is expressed in kilowatts if the consumed real power is expressed in kilowatts. 2. The ratio of (a) the maximum power, integrated over a specified time interval, such as 15 or 30 minutes, and usually expressed in kilowatts, consumed by a system, to (b) the maximum volt-amperes, expressed in kilovolt-amperes if the power is expressed in kilowatts, integrated over a time interval of the same duration, though not necessarily during the same interval. Note: Charges for electrical power may be based on the demand factor as well as the kilowatt-hours of electrical energy consumed.
Industry:Telecommunications
The ratio in dB of the voltage entering a loop and telephone to the sound pressure produced by the telephone's receiver.
Industry:Telecommunications
The ratio in dB of the sound pressure produced by a speaker to the voltage produced by a telephone and loop as defined by ITU-T Recommendation P. 79.
Industry:Telecommunications
The ratio in dB of the sound pressure produced by a speaker to the voltage produced by a telephone and loop as defined by ANSI/IEEE 661-1997.
Industry:Telecommunications
The ratio in dB of the power of a transmitted signal that is echo loss weighted (as specified in ITU-T Recommendation G. 122) to the power of its reflected echo.
Industry:Telecommunications
The ratio given by Eb/N0, where Eb is the signal energy per bit and N0 is the noise energy per hertz of noise bandwidth.
Industry:Telecommunications
The ratio (in dB) of optical power arriving at the interface (P1) to the optical power reflected back from the same interface (P2. )
Industry:Telecommunications
The rate of transfer or absorption of energy per unit time in a system. 2. Whenever the power of a radio transmitter etc. Is referred to, it shall be expressed in one of the following forms, according to the class of emission, using the arbitrary symbols indicated:peak envelope power (PX or pX); mean power (PY or pY); carrier power (PZ or pZ. ) For different classes of emission, the relationships between peak envelope power, mean power and carrier power, under the conditions of normal operation and of no modulation, are contained in CCIR Recommendations which may be used as a guide. For use in formulae, the symbol p denotes power expressed in watts and the symbol P denotes power expressed in decibels relative to a reference level.
Industry:Telecommunications
The rate of relative phase change between a given clock signal and a stable reference signal. Note: The two signals are generally at or near the same frequency or have an integral multiple frequency relationship.
Industry:Telecommunications
