The present document is applicable to the stage three of the telephony 7 kHz, videotelephony, audiographic
conference
and videoconference teleservices for the pan-European Integrated Services Digital Network (ISDN) as provided by European public telecommunications operators at the T reference point or coincident S and T reference point (as specified in ITU-T Recommendation I.411 [11] by means of the Digital Subscriber Signalling System No. one (DSS1) protocol. EN 300 267-1 [5] provides
the protocol specification and EN 300 267-2 [6] the Protocol Implementation Conformance Statement (PICS) proforma specification. Stage three identifies the protocol
procedures
and switching functions needed to support a telecommunications service (see ITU-T Recommendation I.130 [10]). The present document provides the Test Suite Structure and Test Purposes (TSS&TP) for the user side. It covers the protocol requirements as defined in EN 300 267-1 [5] and provides test purposes for the additional generic requirements
for basic telecommunication services not defined in EN 300 403-1 [2] (EN 300 267-1 [5], clause 5), for the telephony 7 kHz teleservice (EN 300 267-1 [5], clause 6), for the videotelephony teleservice (EN 300 267-1 [5], clause 7), for the
audiographic conference teleservice (EN 300 267-1 [5], clause 8) and for the videoconference teleservice (EN 300 267-1 [5], clause
9).
Two types of implementations are covered:
- an implementation which supports user requirements at the coincident S and T reference point;
-
an implementation which supports user requirements for interworking with private ISDNs at the T reference point.