论文部分内容阅读
随着社会主义革命和建设事业的发展,充分发挥电话的作用,增加电话的特殊服务性能,已提到议事日程上来了。“三人通话”是各国比较重视的一个重要问题。所谓三人通话,是指两个用户通过交换机实现通话后,在需要的情况下,再拨叫第三个用户,通过交换机实现三个人互相通话。我们于77年7月研制了一台JDSQ—全电子自动电话交换机,并增加了三人通话性能。在研制过程中,曾提出了多种方案,现将其中主要两种方案介绍如下:
With the development of the socialist revolution and construction, giving full play to the role of the telephone and increasing the special service performance of the telephone, the agenda has been mentioned. The “three-person calling” is an important issue that all countries pay more attention to. The so-called three-person call, refers to the two users through the switch to achieve the call, in the case of need, then dial the third user, through the switch to achieve three people call each other. In July 77, we developed a JDSQ-all-electronic automatic telephone exchange and added three-way calling. In the development process, have put forward a variety of programs, now the two main programs are described below: