ANSI/ATIS 0600403.1999(R2007) — Network and Customer Installation Interfaces – (ISDN) Primary Rate Layer 1 Electrical Interfaces Specification (formerly T1.403-1999 (R2007)) by Alliance for Telecommunication Industry Solutions

ANSI/ATIS 0600403.1999(R2007) -- Network and Customer Installation Interfaces - (ISDN) Primary Rate Layer 1 Electrical Interfaces Specification (formerly T1.403-1999 (R2007)) by Alliance for Telecommunication Industry Solutions

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