Private Integrated Services Network (PISN); Inter-Exchange Signalling Protocol; Call Offer Supplementary Service; Part 2: Abstract Test Suite (ATS) and Partial Protocol Implementation eXtra Information for Testing (PIXIT) Proforma (V1.1.1)
"The present document specifies the Abstract Test Suite (ATS) and partial Protocol Implementation extra Information for Testing (PIXIT) proforma for the VPN ""b"" entry point of implementations conforming to the standard for the Call offer supplementary service (SS-CO) as described in EN 300 362 [1]. EN 301 491-1 [5] specifies the Test Suite Structure and Test Purposes (TSSTP) related to this ATS and partial PIXIT proforma specification."