PRETS 300 200 : SEP 90
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.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); CALL FORWARDING UNCONDITIONAL (CFU) SUPPLEMENTARY SERVICE - SERVICE DESCRIPTION
12-01-1994
01-12-2013
Defines the stage one of the Call Forwarding Unconditional (CFU) supplementary service for the Pan-European Integrated Services Digital Network (ISDN) as provided by European public telecommunications operators. Defines the interworking requirements of private ISDNs with the public ISDN. Does not cover charging principles.
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