SYNKRONISERINGSSYSTEM

PCT No. PCT/SE83/00327 Sec. 371 Date May 4, 1984 Sec. 102(e) Date May 4, 1984 PCT Filed Sep. 14, 1983 PCT Pub. No. WO84/01247 PCT Pub. Date Mar. 29, 1984.Each of a plurality of stored program controlled stations associated with a digital telecommunication network includes: a plurality of clocks and an adjustable oscillator for generating transmission pulses used in a local station and adjacent stations; a phase difference meter for determining, with the aid of a clock selector, phase differences between the pulses of the oscillator and the clock pulses; and a plurality of regulation value generators which are connected via a regulation value generator selector to the phase difference meter. Each generator converts in accordance with a network synchronizing method, determined phase differences to regulation values for regulating the oscillator. The program memories of the stations include reprogrammable selection memories to store control information by which the network synchronizing method is selected and by which the clock selectors and generator selectors are controlled such that the oscillators are synchronized in accordance with the selected method.