"ISDN primary rate us" CNS Standards Search Result

1. Ready translated english version CNS Standards ( SALE mark ) and Chinese version CNS Standards, you can purchase directly in the web page; After receive your payment, we will send the CNS Standards PDF file to your Email within 1~3 days.
2. Other English version CNS Standards are not ready translated, only after get your order, then we translate them, time usually need more 3-5 days .


	CNS 13931 - English Version ISDN primary rate user-network interface - Layer 1 specification 整體服務數位網路原級速率用戶網路間介面–第一層規範 - 英文版

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