UNE-ETS 300438-1ED1

Broadband Integrated Services Digital Network (B-ISDN);Signalling ATM Adaptation Layer (SAAL);Service Specific Co-ordination Function (SSCF) for support of signalling at the Network Node Interface (NNI);Part 1: Specification of SSCF at NNI [ITU-T Recommendation Q.2140 (1995), modified] (Endorsed by Asociación Espanola de Normalización in August of 2022.)