This Recommendation describes the adaptation of the narrow-band ISDN User Part (ISUP) for the support of narrow-band ISDN services independent of the bearer technology and signalling message transport technology used.This Recommendation is written as a se
ITU-T Q.1901-2000 history
2000ITU-T Q.1901-2000 Bearer Independent Call Control Protocol Series Q: Switching and Signalling Study Group 11