为了弥补不太可靠的电缆电话线路,苏修建立起定时(每天4小时)的激光电话服务。去年七月,在苏修科学院(埃里温)和24公里之外、高350米的保鲁肯天体物理观测台之间使用了24个信道的双向通话回路。该通信线路使用了一台据说带宽为100 In order to make up for the less reliable cable telephone lines, Su Xiu established a regular (4 hours a day) laser phone service. Last July, a 24-channel two-way talkback circuit was used between the Soviet Academy of Sciences (Yerevan) and the Paulus Lukas Astrophysical Observatory, 350 meters high and 24 kilometers away. The communication line uses a reported bandwidth of 100