Delays introduced by line signalling equipment should be held to a minimum onsistent with the requirements covered herein to minimize signal transfer times. Minimizing the delay is especially important in the case of the answer signai and in the case of
ITU-T Q.317-1988由国际电信联盟 IX-ITU 发布于 1988。
ITU-T Q.317-1988 在中国标准分类中归属于: M11 通信网技术体制。
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