- Industry: Telecommunications
- Number of terms: 29235
- Number of blossaries: 0
- Company Profile:
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 unit of information derived from the occurrence of one of two equiprobable, mutually exclusive, and exhaustive events. Note: A bit may, with perfect formatting and source coding, contain 1 Sh of information. However, the information content of a bit is usually be less than 1 Sh.
Industry:Telecommunications
With respect to the rf spectrum, an area in which emissions are restricted for the purpose of minimizing possible impact on the operations of radio astronomy or other activities that are highly sensitive to rf interference.
Industry:Telecommunications
The variation of the field intensity of an antenna as an angular function with respect to the axis. Note: A radiation pattern is usually represented graphically for the far-field conditions in either horizontal or vertical plane. 2. In fiber optics, the relative power distribution at the output of a fiber or active device as a function of position or angle. Note 1: The near-field radiation pattern describes the radiant emittance (W•m-2) as a function of position in the plane of the exit face of an optical fiber. Note 2: The far-field radiation pattern describes the irradiance as a function of angle in the far-field region of the exit face of an optical fiber. Note 3: The radiation pattern may be a function of the length of the fiber, the manner in which it is excited, and the wavelength. Synonym directivity pattern.
Industry:Telecommunications
Within a hierarchy of encrypting keys and transaction keys, the highest level of key-encrypting key.
Industry:Telecommunications
The type of cryptography in which the encryption process is publicly available and unprotected, but in which a part of the decryption key is protected so that only a party with knowledge of both parts of the decryption process can decrypt the cipher text. Note: Commonly called non-secret encryption in professional cryptologic circles. FIREFLY is an application of public key cryptography. 2. An Encryption system using a linked pair of keys. What one pair of keys encrypts, the other pair decrypts.
Industry:Telecommunications
The transmission of telegraphic codes by means of radio.
Industry:Telecommunications
To retransmit a received message from one station to another station. 2. An electromechanical or semiconductor switch (i.e., solid-state relay) in which a current or voltage applied across one port or terminal controls electrical currents or voltages that appear across another terminal or terminals.
Industry:Telecommunications
The Signaling System No. 7 (SS7) switch designated as control switch for circuits in the both-way circuit group. For the same circuits, the other switch is referred to as the slave. On detecting glare, the control switch proceeds to complete the call for which it has already sent an initial address message (IAM. ) The IAM received from the slave is discarded. The call being processed by the slave is backed off and the switch path released. A release message is not sent.
Industry:Telecommunications
To convert an analog signal into a digital signal carrying equivalent information.
Industry:Telecommunications
