Information Technology - Telecommunications and Information Exchange Between Systems - Private Integrated Services Network - Specification, Functional Model and Information Flows - Simple Dialog Supplementary Service

Designation Number:

CAN/CSA-ISO/IEC 21407:04 (R2017)

Standard Type:

National Standard of Canada - Adoption of International Standard

Standard Development Activity:

Reaffirmation

ICS code(s):

33.040.35

Status:

Proceeding to development

SDO Comment Period Start Date:

2022-03-29

SDO Comment Period End Date:

2022-04-21

Posted On:

2022-03-18

Scope:

This International Standard specifies the supplementary service Simple Dialog (SS-SD), which is applicable to various basic services supported by Private Integrated Services Networks (PISNs). Basic services are specified in ISO/IEC 11574. Supplementary service SD enables a user to communicate with another user or application by the exchange of keypad and display information transparently over a PISN. Service specifications are produced in three stages, according to the method described in ETS 300 387.

This International Standard contains the stage 1 and stage 2 specifications of SS-SD. The stage 1 specification (clause 6) specifies the supplementary service as seen by users of PISNs. The stage 2 specification (clause 7) specifies the functional entities involved in the supplementary service and the information flows between them.

Project need:

To review the Standard within the required 5 year period.

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