In developing an IP phone, the testing of its functions,performance, and interoperability is essential. Speech quality, number of users supported and interoperability of various IP phone systems operated in the same environment may be different. Unfortunately, there isn't a standard method to evaluate different IP phone systems yet. The details of an environment for testing IP phones (ITE) developed and its applications are described in this paper.%IP电话开发过程中，对开发的IP电话系统的功能、性能和互通性等的测试是不可缺少的环节.在同一应用环境中的不同IP电话的话音质量、支持的用户规模和互通性等各方面可能是不同的.目前还没有一个标准的方法对各种IP电话系统作出评价.介绍了研制的一个IP电话测试环境ITE的实现细节和初步的应用情况.
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