PREN 300 367 : 1.2.1
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
INTEGRATED SERVICES DIGITAL NETWORK (ISDN); EXPLICIT CALL TRANSFER (ECT) SUPPLEMENTARY SERVICE; SERVICE DESCRIPTION
23-07-2013
12-01-2013
Evolution of applicability; Modification of the applicability of the supplementary service. Explicit Call Transfer (ECT) for ISDN (complement).
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