ITU Q.2931 D:2000
ITU Q.2931 D:2000 Broadband Integrated Services Digital Network (b-isdn) - Digital Subscriber Signalling System No. 2 (dss 2) - User-network Interface (uni) Layer 3 Specification For Basic Call/connection Control: Abstract Test Suite (ats) And Partial Protocol Implementation Extra Information For Testing (pixit) Proforma For The User Specifies Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma for the user attached to the T[B] reference point or coincident S[B] and T[B] ref