ITU Q.2939.1:1997
ITU Q.2939.1:1997 Digital Subscriber Signalling System No. 2 - Application Of Dss 2 Service-related Information Elements By Equipment Supporting B-isdn Services Gives supplementary information on using service-related information elements for individual B-ISDN services. Considers services as defined for public B-ISDN. Does not define additional codings needed