This Recommendation describes the characteristics of a digital section for ISDN basic rate access, between the network user interface (at the reference point T defined in Recommendation I.411) and the local exchange (at the reference point V1 defined in Recommendation Q.512) providing the recommended 2B +D channel structure and the required additional functions.
ITU-T G.960 SPANISH-1993 history
1993ITU-T G.960 SPANISH-1993 Access Digital Section for ISDN Basic Rate Access (Study Group XVIII) 35 pp