| 释义 |
sixdigit translation
六位数字翻译
The operation of interpreting six digits, commonly comprising a three digit numbering plan area code followed by a threedigit central office code , as routing control for the switching of calls.
六位数字的解释操作,通常前三位数表示电话编号方案的区域代码,后三位表示电话局代 码,用于对电话呼叫交换进行路由控制。 |