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标题:
VARIOUS TONES USED IN NATIONAL NETWORKS
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时间:
2016-4-25 15:18
作者:
yangzi_ok
标题:
VARIOUS TONES USED IN NATIONAL NETWORKS
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附件: [VARIOUS TONES USED IN NATIONAL NETWORKS (ACCORDING TO ITU-T RECOMMENDATION E.180(03/1998))]
T-SP-E.180-2010-PDF-E.pdf
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附件: [VARIOUS TONES USED IN NATIONAL NETWORKS (ACCORDING TO ITU-T RECOMMENDATION E.180(03/1998))] T-SP-E.180-2010-PDF-E.pdf (2016-4-25 15:17, 262.46 KB) / 下载次数 0