calling line identification restriction (CLIR)

Standardized transmission of caller number between Harris 20-20 private network and public network;

Harris 20-20专网与公网间主叫号码的规范传送

Data configuration for receiving calling number in NO.1 signalling system;

1号信令下接收主叫号码的数据库配置

Realization of the calling number sending in Sichuan power communication exchange network;

四川电力行政交换网全网发送主叫号码的实现

This paper introduces how to query and analyze the data about the calling number at initial stage of calling procedure in S12 GSM exchange system of current Chinese and some problems appearing in the exchange engineering, and presents how to deal with this kind of problems through detail examples.

本文介绍了当前国内GSM网络中使用较广的S12交换系统,在呼叫发起初期对主叫号码相关数据的查询和分析及其在交换工程中容易遇到的问题,并通过具体实例,介绍对该类问题的处理方法。