对Rf Web服务调用这些操作后，会将您的呼叫转换为Diameter消息，并将其传递到后端记帐服务器进行记录。

After you call these operations on the Rf Web services, they transform your call into diameter messages and pass them to the backend Accounting server for recording.

youdao

通过对呼叫数据进行加密、消息认证和数字签名，防止内部攻击，实现安全细粒度控制。

By the way of encryption, message authentication, and digital signature, the Call System can defense the interior attacks and achieves fine-grained security.

youdao

论文在分别介绍IP多媒体子系统及其呼叫控制协议SIP之后，对SIP消息的特点进行分析。

After introducing IP Multimedia Subsystem and Session Initiation Protocol, the thesis analyses the characteristic of SIP when compressing.

youdao