The LIDB provides subscriber information such as calling card information/validation,third-party billing instructions and originating line number screening which provides information regarding custom calling features.

• LIDB 提供如呼叫卡信息/验证这样的用户信息、第三方记帐说明和始发线路号码屏蔽，该屏蔽可提供用户呼叫特性的相关信息。