This Recommendation specifies the Protocol Implementation Conformance Statement (PICS) proforma for the TB reference point or coincident SB and TB reference point (as defined in ITU-T I.413 [2]) of implementations conforming to the procedures for the support of point-to-point release 1 switched virtual channel connections between the calling party and the called party of the Digital Subscriber Signalling System No. 2 (DSS2) protocol for the Broadband Integrated Services Digital Network (B-ISDN), ITU-T Q.2931 [1]. Other Recommendations of the Q.2931 family specify Test Suite Structure and Test Purposes (TSS & TP) and Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma based on this Recommendation. NOTE - This Recommendation related to protocol conformance is published only in English, it is based on an external SDO's standard published in English.