在X.25网上传送话音很成问题，因为端到端的延时太长，而且在时延上有抖动。
The transfer of voice over an X. 25 network is very problematic because of too large end-to-end delay and fitter on this delay.
在X.25网上传送话音很成问题，因为端到端的延时太长，而且在时延上有抖动。
The transfer of voice over an X. 25 network is very problematic because of too large end-to-end delay and fitter on this delay.
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