ETSI EN 301 455-2 English Printed Edition English PDF Private Integrated Services Network (PISN); Inter-exchange signalling protocol; Cordless Terminal Mobility (CTM); Incoming call additional network feature for the VPN b service entry point; Part 2: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) pr

standard published 12/01/2000 by European Telecommunications Standards Institute