- Industry: Telecommunications
- Number of terms: 29235
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In a communications system, the condition in which a component of the system has reached its maximum traffic handling capacity. Note: Saturation is equivalent to one erlang per circuit. 2. The point at which the output of a linear device, such as a linear amplifier, deviates significantly from being a linear function of the input when the input signal is increased. Note: Modulation often requires that amplifiers operate below saturation.
Industry:Telecommunications
In a communications system, the control and implementation of a set of functions that (a) prevent or eliminate degradation of any part of the system, (b) initiate immediate response to demands that are placed on the system, (c) respond to changes in the system to meet long range requirements, and (d) may include various subfunctions, such as (i) immediate circuit utilization actions, (ii) continuous control of circuit quality, (iii) continuous control of equipment performance, (iv) development of procedures for immediate repair, restoration, or replacement of facilities and equipment, (v) continuous liaison with system users and with representatives of other systems, and (vi) the provision of advice and assistance in system use.
Industry:Telecommunications
In a communications system, the equipment that adapts or formats the signal for transmittal over the communication medium. Note 1: An example of a MAU is an optical transmitter, which accepts an electrical signal at its input port and converts it to an optical signal accessible at its output port. Note 2: Some prefer to limit the term medium access unit to FDDI usage, with the term media converter being preferred for general usage. Synonym media converter.
Industry:Telecommunications
In a communications system, the equipment that adapts or formats the signal for transmittal over the communication medium. Note 1: An example of a MAU is an optical transmitter, which accepts an electrical signal at its input port and converts it to an optical signal accessible at its output port. Note 2: Some prefer to limit the term medium access unit to FDDI usage, with the term media converter being preferred for general usage. Synonym media converter.
Industry:Telecommunications
In a communications system, the signal power or intensity at a specified point and with respect to a specified reference level, e.g., 1 mW.
Industry:Telecommunications
In a communications system, the sliding 60-minute period during which occurs the maximum total traffic load in a given 24-hour period. Note 1: The busy hour is determined by fitting a horizontal line segment equivalent to one hour under the traffic load curve about the peak load point. Note 2: If the service time interval is less than 60 minutes, the busy hour is the 60-minute interval that contains the service timer interval. Note 3: In cases where more than one busy hour occurs in a 24-hour period, i.e., when saturation occurs, the busy hour or hours most applicable to the particular situation are used. Synonym peak busy hour.
Industry:Telecommunications
In a communications system, the sliding 60-minute period during which occurs the maximum total traffic load in a given 24-hour period. Note 1: The busy hour is determined by fitting a horizontal line segment equivalent to one hour under the traffic load curve about the peak load point. Note 2: If the service time interval is less than 60 minutes, the busy hour is the 60-minute interval that contains the service timer interval. Note 3: In cases where more than one busy hour occurs in a 24-hour period, i.e., when saturation occurs, the busy hour or hours most applicable to the particular situation are used. Synonym peak busy hour.
Industry:Telecommunications
In a communications system, the time interval required to attain synchronism. 2. In satellite control communications, the time interval required for locking tracking equipment on a signal from a communications satellite.
Industry:Telecommunications
In a communications system, the total number of unit intervals required to transmit any given character, including synchronizing, information, error checking, or control characters, but not including signals that are not associated with individual characters. Note: An example of a time interval that is excluded when determining character interval is any time added between the end of a stop signal and the beginning of the next start signal to accommodate changing transmission conditions, such as a change in data signaling rate or buffering requirements. This added time is defined as a part of the intercharacter interval.
Industry:Telecommunications
In a communications system, using a device that generates signals for selecting and establishing connections. Note: The term dialing is often used to designate or refer to all calling devices used for inserting data to establish connections.
Industry:Telecommunications
