ITU-T E.132 FRENCH-1993
STANDARDIZATION OF ELEMENTS OF CONTROL PROCEDURES FOR SUPPLEMENTARY TELEPHONE SERVICES

Standard No.

ITU-T E.132 FRENCH-1993

Release Date

1993

Published By

International Telecommunication Union (ITU)

Latest

ITU-T E.132 FRENCH-1993

Scope

CCITT Recommendation E.131 describes, in the form of code schemes, three subscriber control procedures for supplementary telephone services. In order to avoid undesirable proliferation of different types of control procedures, it recommends that Administrations wishing to make supplementary telephone services available to their subscribers should choose one of the three code schemes.

ITU-T E.132 FRENCH-1993 history

• 1993 ITU-T E.132 FRENCH-1993 STANDARDIZATION OF ELEMENTS OF CONTROL PROCEDURES FOR SUPPLEMENTARY TELEPHONE SERVICES