plesiochronous signals

См. также в других словарях:

• Plesiochronous difference — In telecommunications, if two digital signals are plesiochronous, their transitions occur at nearly the same rate, with any variation being within preset limits. EXAMPLE: If two networks are working together their clocks may be using two… …   Wikipedia

• Plesiochronous — The term Plesiochronous is derived from the Greek plesio , meaning near, and chronos , time, and refers to the fact that plesiochronous systems run in a state where different parts of the system are almost, but not quite perfectly, synchronised.… …   Wikipedia

• Plesiochronous Digital Hierarchy — The Plesiochronous Digital Hierarchy (PDH) is a technology used in telecommunications networks to transport large quantities of data over digital transport equipment such as fibre optic and microwave radio systems. The term plesiochronous is… …   Wikipedia

• плезиохронные сигналы — Сигналы с одинаковой номинальной скоростью, которая изменяется в заданных допустимых пределах. Прием плезиохронных сигналов осуществляется с использованием средств, применяемых в синхронной сети. Вследствие медленного расхождения частот… …   Справочник технического переводчика

• Time-division multiplexing — (TDM) is a type of digital or (rarely) analog multiplexing in which two or more signals or bit streams are transferred apparently simultaneously as sub channels in one communication channel, but are physically taking turns on the channel. The… …   Wikipedia

• Synchronous optical networking — (SONET) and Synchronous Digital Hierarchy (SDH), are two closely related multiplexing protocols for transferring multiple digital bit streams using lasers or light emitting diodes (LEDs) over the same optical fiber. The method was developed to… …   Wikipedia

• E-carrier — In digital telecommunications, where a single physical wire pair can be used to carry many simultaneous voice conversations by time division multiplexing, worldwide standards have been created and deployed. The European Conference of Postal and… …   Wikipedia

• T-carrier — In telecommunications, T carrier, sometimes abbreviated as T CXR , is the generic designator for any of several digitally multiplexed telecommunications carrier systems originally developed by Bell Labs and used in North America, Japan, and Korea …   Wikipedia

• Telephone exchange — A telephone operator manually connecting calls with cord pairs at a telephone switchboard. In the field of telecommunications, a telephone exchange or telephone switch is a system of electronic components that connects telephone calls. A central… …   Wikipedia

• ГОСТ 22670-77: Сеть связи цифровая интегральная. Термины и определения — Терминология ГОСТ 22670 77: Сеть связи цифровая интегральная. Термины и определения оригинал документа: 10. n ичный сигнал электросвязи n агу digital signal Цифровой сигнал электросвязи, имеющий п возможных состояний представляющего параметра,… …   Словарь-справочник терминов нормативно-технической документации

• Ethernet over PDH — or EoPDH is one of many techniques that provided Ethernet connectivity over non Ethernet networks. Specifically, EoPDH is a standardized methodology for transporting native Ethernet frames over the existing telecommunications copper… …   Wikipedia