随着电信业的发展,各地的电话号码位数越来越多,再加上长途区号,一个电话号码位数可达十几位,这样既不好记忆,拨号也容易出错,还较费时间。如果使用“缩位拨号”,既省时、又方便、更不易出错。所谓缩位拨号就是用一位或两位自编码代替多位电话号码的一种功能,是程控电话服务项目的一 With the development of the telecom industry, the number of digits of telephone numbers in various places is more and more. Coupled with the long-distance area code, a telephone number can reach a dozen or so digits. This makes neither memory nor dialing error prone, . If you use “Abbreviated Dialing”, not only time-saving, but also convenient and less error-prone. The so-called abbreviated dialing is a function of using one or two self-encoding instead of multiple phone numbers is a program-controlled telephone service