NET 4-1994 Attachments to Public Switched Telephone Network (PSTN); General Technical Requirements for Equipment to Be Connected to an Analogue Subscriber Interface in the PSTN
ETSI - European Telecommunications Standards Institute
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NET 4-1994
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1994NET 4-1994 Attachments to Public Switched Telephone Network (PSTN); General Technical Requirements for Equipment to Be Connected to an Analogue Subscriber Interface in the PSTN