- 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.
Retardation, and--in the general case--redirection, of a wavefront passing through (a) a boundary between two dissimilar media or (b) a medium having a refractive index that is a continuous function of position, e.g., a graded-index optical fiber. Note: For two media of different refractive indices, the angle of refraction is closely approximated by Snell's Law.
Industry:Telecommunications
Risk assessment of a system, considering its vulnerabilities and perceived security threat.
Industry:Telecommunications
Rotating a directional antenna or transducer rapidly about one or more axes. 2. Changing the frequency or pulse repetition rate of a signal source. 3. Changing the tuning of a receiver, usually by sweeping through many or all frequencies. 4. Redirecting the beam of a fixed antenna array by changing the relative phases of the signals feeding the antenna elements.
Industry:Telecommunications
Routing in which a switching center automatically delivers messages to a specified list of destinations. Note 1: Collective routing avoids the need to list each single address in the message heading. Note 2: Major relay stations usually transmit messages bearing collective-routing indicators to tributary, minor, and other major relay stations.
Industry:Telecommunications
Routing in which data, such as time delay, extracted from incoming messages, during specified periods and over different routes, are used to determine the optimum routing for transmitting data back to the sources. Note: Heuristic routing allows a measure of route optimization based on recent empirical knowledge of the state of the network.
Industry:Telecommunications
Routing in which numbering plans and routing tables are used to permit the collocation, in the same area code, of switches using a deterministic routing scheme with switches using a nondeterministic routing scheme, such as flood search routing. Note: Routing tables are constructed with no duplicate numbers, so that direct dial service can be provided to all network subscribers. This may require the use of 10-digit numbers.
Industry:Telecommunications
Routing that is automatically adjusted to compensate for network changes such as traffic patterns, channel availability, or equipment failures. Note: The experience used for adaptation comes from the traffic being carried.
Industry:Telecommunications
Routing that is based on hierarchical addressing. Note: Most Transmission Control Protocol/Internet Protocol (TCP/IP) routing is based on a two-level hierarchical routing in which an IP address is divided into a network portion and a host portion. Gateways use only the network portion until an IP datagram reaches a gateway that can deliver it directly. Additional levels of hierarchical routing are introduced by the addition of subnetworks.
Industry:Telecommunications
RSA is a public key encryption method RSA are the initials of the developers of the algorithm which was done at taxpayer expense. The basic security in RSA comes from the fact that, while it is relatively easy to multiply two huge prime numbers together to obtain their product, it is computationally difficult to go the reverse direction: to find the two prime factors of a given composite number. It is this one-way nature of RSA that allows an encryption key to be generated and disclosed to the world, and yet not allow a message to be decrypted.
Industry:Telecommunications
Scanning in which the motion of the scanning spot follows a raster.
Industry:Telecommunications
