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在1982年6月23日开业的东北新干线的车厢里,出现了一种新的电话系统。这个新装置能与全国通话,而东海道·山阳新干线列车上的电话系统只能与沿线的25个城市通话。从列车上向市内挂电话的服务业务,是1960年出现在东海道旧干线特快列车“回声号”上的,1965年又装在东海道新干线的“光号”和“回声号”上。根据日本国铁的统计,在海道·山阳新干线1965年平均每次列车通话13.2次,现在平均通话15次,线路几乎是处于满负荷状态。可见,车内公用电话已是不可缺少的设备了。因此,国铁在东北和上越新干线上装用了更方便的电话系统。东海道·山阳的电话系统是投入100日元硬币,
In the compartment of the Tohoku Shinkansen opened on June 23, 1982, a new type of telephone system emerged. The new unit can talk to the whole country while the telephone system on the Tokaido-Sanyo Shinkansen train can only talk to 25 cities along the route. From the train to the city to hang up the phone service business, appeared in the Tokaido Express Line of the Tokaido Expressway in 1960, “echo number”, and in 1965 and installed in the Tokaido Shinkansen “light” and “echo” on . According to the statistics of Japan’s National Railways, an average of 13.2 trains were traversed each day in Hokkaido, Sanyo Shinkansen in 1965, and the average number of calls now is 15 and the line is almost at full capacity. Visible, the public car phone is an indispensable device. Therefore, the National Railways installed a more convenient telephone system on the northeast and the Joetsu Shinkansen. Tokaido · Sanyo’s telephone system is put 100 yen coins,