Physical design of the Time Base Unit of the GRUPPI SPECIALI .
GRUPPI SPECIALI was the first switching system deployed in the Italian Telecom network in 1972 (Mestre, Venice)
Physical design of the Time Base Unit of the GRUPPI SPECIALI : Piero Belforte 1971
1. PIERO BELFORTE March 1971
PHYSICAL DESIGN CONSIDERATIONS FOR THE
TIME BASE UNIT OF THE FIRST DIGITAL SWITCHING
SYSTEM DEPLOYED IN THE ITALIAN TELECOM
NETWORK (GRUPPI SPECIALI).
THIS SWITCHING SYSTEM WAS DEVELOPED BY CSELT in
1971 and INSTALLED IN MESTRE (Venice) in 1972.