"Teleservices Supported " CNS Standards List |
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CNS 13694
2018 Edition Definition of Teleservices Supported by an Integrated Services Digital Network (ISDN) 整體服務數位網路支援之電訊服務定義 |
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CNS 13707
2018 Edition Teleservices Supported by an Integrated Services Digital Network (ISDN) 整體服務數位網路支援之電訊服務 |
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