Summary

Recommendation ITU-T Q.3941.2 specifies the abstract test suite (ATS) and partial protocol implementation extra information for testing (PIXIT) proforma specification for network integration testing (NIT) to verify the overall compatibility of SIP, ISDN and non-ISDN (PSTN) over the national or international ISDN networks. The ATS specification covers the procedures described in Recommendations ITU‑T Q.1912.5 and ITU‑T Q.699. For SIP- and SDP-specific terminology, reference shall be made to 3GPP TS 24.229 and RFC 3261 respectively.