ETSI EN 301 490-2
ETSI EN 301 490-2
Private Integrated Services Network (PISN); Inter-exchange signalling protocol; Call transfer supplementary service for the VPN b service entry point; Part 2: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification
standard published 12/01/2000 by European Telecommunications Standards Institute
