ITU-T E.132-1993
Standardization of Elements of Control Procedures for Supplementary Telephone Services

Standard No.

ITU-T E.132-1993

Release Date

1993

Published By

International Telecommunication Union (ITU)

Latest

ITU-T E.132-1993

Replace

ITU-T E.132-1988

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.132-1993 Referenced Document

• ITU-T E.131 Subscriber Control Procedures for Supplementary Telephone Services
• ITU-T E.132 Standardization of Elements of Control Procedures for Supplementary Telephone Services
• ITU-T E.161 Arrangement of Digits Letters and Symbols on Telephones and Other Devices that can be Used for Gaining Access to a Telephone Network Series E: Overall Network Operation Telephone Service Service Operation and Human Factors International Operation - Number*， 2001-02-01 Update

ITU-T E.132-1993 history

• 1993 ITU-T E.132-1993 Standardization of Elements of Control Procedures for Supplementary Telephone Services
• 1988 ITU-T E.132-1988 Standardization of Elements of Control Procedures for Supplementary Telephone Services - Telephone Network and ISDN - Operation, Numbering, Routing and Mobile Service (Study Group II) 2 pp