因此，IT架构师决定在消费者和提供者之间使用一个简单的请求响应或者回叫协议。
Therefore, the IT architect has decided to use a simple request response or callback protocol between the consumer and provider.
CCXML比大多数VoiceXML实现更为高级，提供了对回叫、事件侦听器和多路及多方会话的支持。
CCXML is more advanced than most VoiceXML implementations, offering support for callbacks, event listeners, and multi-line and multi-party sessions.
利用这一机制，COM服务器可以在发生某一事件时回叫客户端。
With this mechanism, a COM server can call back to a client when some event has occurred.
为了使调制解调器有时间在准备回叫时进行重置，客户端将延迟操作。
The client is delaying in order to give the modem time to reset itself in preparation for callback.
为了使调制解调器有时间在准备回叫时进行重置，客户端将延迟操作。
The client is delaying in order to give the modem time to reset itself in preparation for callback.
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