例如，可以在回调基类中实现错误处理方法，让所有回调都可以使用它，从而确保以一致的方式处理所有远程服务异常。
For example, an error handling method can be implemented in a callback base class so that it can be used by all callbacks to ensure all remote service exceptions will be handled consistently.
应用程序开发人员通过它避免了与远程Web服务调用相关的复杂事务错误和超时处理。
It shields application developers from the complexity of transaction error and timeout handling related to remote Web services invocation.
不过，这些远程遥测技术最重要的特征是错误诊断和及时提供服务。
Perhaps the most important features of these telemetry systems, though, are fault diagnosis and timely servicing.
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