本规范适用于向中国电信提供用户数据库（UDB）的设备提供商，及与UDB

进行对接的IT 支撑系统、宽带接入系统、应用系统/业务平台、综合业务管理

平台等周边系统的设备提供商和集成商，为中国电信UDB 的设备设计、开发、

建设、维护管理等方面提供技术依据。-This code is applicable to China Telecom to provide the user database (UDB) for equipment vendors, and with the UDB

Docking of the IT support systems, broadband access systems, applications, system/service platform, integrated business management

Platforms, and other peripheral equipment providers and system integrators, equipment to China Telecom UDB design, development,

Construction, maintenance, management, technical basis.