DS DS/EN 28877
DS DSEN 28877 1994-JUN-13 nformaton technology - Telecommuncatons and nformaton exchange between systems - nterface connector and contact assgnments for SDN Basc Access nterface located at reference ponts S and T
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The standard specifies the 8-pole connector and the assignments of poles/contacts for use in physical interfaces of ISDN basic access.