ITU Q.2951:1995
ITU Q.2951:1995 Stage 3 Description For Number Identification Supplementary Services Using B-isdn Digital Subscriber Signalling System No. 2 (dss 2) - Basic Call Defines stage 3 of Direct-Dialling-In (DDI) supplementary service for Broadband Integrated Services Digital Network (B-ISDN) at the reference points using the Digital Subscriber Signalling System No.