plesiochronous


plesiochronous

(communications)Nearly synchronised, a term describing acommunication system where transmitted signals have the samenominal digital rate but are synchronised on different clocks.

According to ITU-T standards, corresponding signals areplesiochronous if their significant instants occur atnominally the same rate, with any variation in rate beingconstrained within specified limits.

plesiochronous

A transmission where the sending and receiving devices are synchronized but set to different clocks. Although the bits may not arrive in the same time slot as they were sent, as long as they arrive within a certain, defined range, the transmission is said to be plesiochronous (almost synchronous).