I.431

E1318585 UNEXPLORED

I.431 is an ITU-T (formerly CCITT) recommendation that defines the physical layer and electrical characteristics for primary rate ISDN interfaces.

All labels observed (1)

Label Occurrences
I.431 canonical 1

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Referenced by (1)

Full triples — surface form annotated when it differs from this entity's canonical label.

CCITT notableStandard I.431