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New ETSI TCRTR 033 View larger

ETSI TCRTR 033

M00000254

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ETSI TCRTR 033 Business TeleCommunications (BTC); Private Telecommunication Network (PTN); Integrated scenario for business communications

standard by European Telecommunications Standards Institute, 09/01/1995

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Identification and description of standardisation work needed to support inter-PTNX calls through public switched equipment