The design principle and implementation method of the SP's short message value-added service were described.

给出了服务提供商的短信增值业务运营平台的设计原理及实现方法。

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PSTN (Public Switch Telephone Net) short message, which is recently introduced by China Telecom, is a non-voice value-added service.

固话短信是中国电信新近推出的一项基于固定电话网的非话音类增值业务。

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It gives the project principles and implementation method of the SP's short message value-added service.

它使SP的短消息增值服务项目的原则和实施方法。

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