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ETSI I-ETS 300 309
M00000354
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ETSI I-ETS 300 309 Integrated Services Digital Network (ISDN); Digital Subscriber Signalling System No. one (DSS1); Partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for data link layer protocol for general application (basic access, user)
standard by European Telecommunications Standards Institute, 05/01/1995
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