We consider the system of equations that describes crosswise oscillati
ons of an infinite string subject to transversal forces at a finite nu
mber N of points. We prove that the string tends to stationary states
as t --> +/-infinity. A brief description of this result was published
in [11]. In [8]-[10] a similar result was obtained for the case N = 1
. These results describe a quantization for the infinite-dimensional H
amiltonian systems under consideration.