prENV 50XXX

Stage 2 Descriptions for ISPBX Supplementary Services - 1) identification supplementary service family; 2) Hold supplementary service; 3) Call Transfer supplementary service; 4) Diversion supplementary service family prENV 50XXX

Current stage: 30.98 Project deleted Jun 1, 1989

Originator: CENELEC

Owner: CLC/TC 208 PROVISIONAL TITLE: Electrotechnical aspects of telecommunication equipment

Type: Pre Standard

ABANDON
prENV 50XXX
30.98 Project deleted
Jun 1, 1989

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