Telecommunications

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9 domain-specific abstractions whose origin domain is Telecommunications.

• Bit Rate — Measure the number of binary digits represented, transferred, or processed per unit time at a declared interface, with the counted layers and overhead convention made explicit.
• Distributed switching — A telecommunications architecture that places multiple processor-controlled switching units near traffic sources while coordinating them through a host or network control hierarchy.
• Friis transmission equation — An ideal free-space relation linking received power to transmitted power, antenna gains, wavelength, and separation.
• Interconnection — The regulated physical and logical linking of distinct telecommunications networks or customer equipment so that traffic can pass across an agreed boundary.
• Mu-Law Companding — A logarithmic companding law that allocates finer quantization resolution to small signal amplitudes and coarser resolution to large amplitudes, with an inverse expander at decoding.
• Network Traffic Simulation — Execute a packet-, flow-, call-, or fluid-level model of traffic interacting with network topology, protocols, queues, and links to estimate performance across controlled workloads and designs.
• Routing in the PSTN — Establish a telephone call by analyzing a called-party number and selecting successive circuit groups through switching and carrier domains, with controlled alternatives for congestion, failure, portability, and service translation.
• VT1.5 — A SONET virtual tributary format that allocates a sub-STS-1 payload channel sized to transport a DS1 signal through synchronous multiplexing.
• Z Code — Compress recurrent radio-network questions, reports, advice, and orders into standardized three-letter Z operating signals whose interpretation is fixed by an editioned Allied codebook and qualified by attached parameters.