２００业务联网漫游的设计与实现邓颖，张雷，艾波２００电话卡密码记帐业务是一种方便拨打国内国际长途电话的新业务系统。用户只需在系统内注册一帐号，并设置一密码，就可以使用任何电话拨打长途。２００业务实现异地联网漫游后，用户不仅在本地，还可以在其它地方通过... 200 Design and Implementation of Business Networking Roaming Deng Ying, Zhang Lei, Ai Bo 200 The calling card password accounting service is a new business system that facilitates the dialing of domestic and international long distance calls. Users simply register an account in the system, and set a password, you can use any phone to make long distance. 200 business to achieve remote network roaming, users not only in the local, but also in other places through ...