Fundamentalsof Telecommunications

ACRONYMS AND ABBREVIATIONS 639 CGSA cellular geographic serving area C/I carrier-to-interference (ratio) CIR committed information rate CL connectionless CLLM consolidated link layer management CLNAP connectionless network access protocol CLP cell loss priority CLR circuit loudness rating CLSF connectionless service functions C/N 0 carrier-to-noise in 1-Hz bandwidth C/N, CNR carrier-to-noise ratio CODEC, codec coder-decoder COM continuation of message compander compressor­expander CONUS contiguous United States COT central office terminal CPCS common part convergence sublayer CPE customer premises equipment CPU central processing unit CRC, crc cyclic redundancy check CRE corrected reference equivalent CREG concentrated range extender with gain CRT cathode-ray tube CS convergence sublayer CSA carrier serving area CSI convergence sublayer indicator CSMA, CSMA/CD carrier sense multiple access, carrier sense multiple access with collision detection CSO composite second-order (products) CT cordless telephone C/T carrier (level)-to-noise temperature ratio CTB composite triple beat CUG closed user group CVSD continuous variable slope delta modulation D/A digital-to-analog DA destination address DAMA demand assignment multiple access DARPA, DARPANET Defense Advanced Research Projects Agency (network) dB decibel dBc decibels referenced to the carrier level dBd dB referenced to a dipole (antenna) dBi dB over an isotropic (antenna) dBm dB referenced to a milliwatt dBmP dBm psophometrically weighted dBmV dB referenced to a millivolt dBm0 dBm referenced to the zero test level point (0 TLP) DBPSK differential binary PSK dBr decibels above or below "reference" dBrnC dB reference noise C-message weighted