The propagation of solitons in a dispersion managed link can be mainly modeled with the evolution of two parameters #gamma# and C, related to the spectral width and the chirp. Steady propagations are shown to be possible if the average dispersion lies in the anomalous domain. With the same conditions, periodical propagations are both theoretically and experimentally demonstrated. With the help of a perturbation theory, the jitter and the signal to noise ratio are theoretically evaluated. The latter is experimentally shown to be the low powr limit of terrestrical systems based on non dispersion shifted fiber. In addition, soliton interaction is theoretically investigated and shown to be the upper power limit of terrestrical systems based on non dispersion shifted fiber. Finally, wavelength and power margins of a single channel 20 Gbit/s soliton transmission over 11 amplifier spans of 102 km are presented. With a proper third-order chromatic dispersion management, 1 Tbit/s should be transmitted over 1,000 km.
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