The present document specifies the Test Suite Structure and Test Purposes (TSS&TP) for the Call Transfer
supplementary service of the Inter-exchange signalling protocol for Private Integrated Services Networks (PISN).
The objective of this TSS and TPs specification is to provide conformance tests which give a greater probability of
inter-operability. The TSS and TPs specification covers the procedures described in EN 300 261 [3].
The ISO standard for the methodology of conformance testing (ISO/IEC 9646-1 [4], ISO/IEC 9646-2 [5] and
ISO/IEC 9646-3 [6]) is used as basis for the test methodology.
The Test Suite Structure and Test Purposes specified in this standard are only intended for VPN scenarios at the "b"
service entry point.
The VPN "b" service entry point is defined in EN 301 060-1 [9] and ETR 172 [15].