PRETS 300 650 : APR 98
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.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) - MESSAGE WAITING INDICATION (MWI) SUPPLEMENTARY SERVICE - SERVICE DESCRIPTION
23-07-2013
12-01-2013
Supplementary service for supporting voice systems. Enables an indication to be given that (voice) mail is available to the intended recipient.
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