谢谢大侠：设置calling card, phone feature or dial plan?

来源: 于 2009-10-16 20:34:02 [旧帖] [给我悄悄话] 本文已被阅读：次

I understand the 电话本里加前缀. Could you please give a little more details on 设置calling card? Is it a feature of phone or dial plan?