ISO IEC 21407 pdf download – Information technology — Telecommunications and information exchange between systems — Private Integrated Services Network — Specification, functional model and information flows — Simple dialog supplementary service

ISO IEC 21407 pdf download – Information technology — Telecommunications and information exchange between systems — Private Integrated Services Network — Specification, functional model and information flows — Simple dialog supplementary service
1Scope
This International Standard specifies the supplementary service Simple Dialog (SS-SD), which is applicable to various basicservices supported by Private Integrated Services Networks (PISNs). Basic services are specified in ISOIEC 11574.
Supplementary service SD enables a user to communicate with another user or application by the exchange of keypad anddisplay information transparently over a PlSN.
Service specifications are produced in three stages, according to the method described in ETS 300 387.This InternationalStandard contains the stage 1 and stage 2 specifications of SS-SD. The stage 1 specification (clause 6) specifies thesupplementary service as seen by users of PISNs. The stage 2 specification (clause 7) specifies the functional entities involvedin the supplementary service and the information flows between them.
2Conformance
In order to conform to this International Standard，a stage 3 standard shall specify sign alling protocols and equipmentbehaviour that are capable of being used in a PISN which supports the supplementary service specified in this InternationalStandard.This means that, to claim conformance, a stage 3 standard is required to be adequate for the support of those aspectsof clause 6 (stage 1) and clause 7(stage 2) which are relevant to the interface or equipment to which the stage 3 standardapplies.
3Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of thisInternational Standard.For dated references, subsequent amendments to, or revisions of, any of these publications do not apply.However, parties to agreements based on this International Standard are encouraged to investigate the possibility of applyingthe most recent editions of the normative documents indicated below.For undated references, the latest edition of the normativedocument referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards.
ISOIEC 11574:2000，Information techuology – Telecommunications and information exchange between systems – PrivateIntegrated Services Network – Circuit-mode 64 kbits bearer services – Service description,functional capabilities andinformation flows
ISO/IEC 11579-1:1994, Information technology -Telecommunications and information exchange between systems – Privateintegrated services network – Part 1: Reference configuration for PISN Exchanges (PINX)
ETS 300 387:1994,Private Telecommunication Network (PTN);Method for the specification of basic and supplementaryservices
ITU-T Rec.1.112:1993,Vocabulary of terms for ISDNs
ITU-TRec.1.210:1993,Principles of telecommunication services supported by an ISDN and the means to describe themITU-T Rec.Z.100:1999, Specification and description language (SDL)
4Definitions
For the purposes of this International Standard, the following definitions apply:4.1External definitions
This International Standard uses the following terms defined in other documents:-Basic Service
(ITU-T Rec.1.210)
– Private Integrated Services Network Exchange (PINX) (ISO/IEC 11579-1)
— Private Integrated Services Network (PISN) (ISO/IEC 11579-1)
— Service (ITU-T Rec. I.112)
— ignalling (ITU-T Rec. I.112)
— Supplementary Service (ITU-T Rec. I.210)
— User (ISO/IEC 11574)
This International Standard refers to the following basic call Functional Entities (FE) defined in ISO/IEC 11574:
— Call Control (CC)
— Call Control Agent (CCA)
This International Standard refers to the following basic call inter-FE relationship defined in ISO/IEC 11574:
— r1
— r2
— r3
4.2 Other definitions
4.2.1 Client User : A user who is able to receive display information and send keypad information.
4.2.2 Display information : A character string which can be displayed on a Client User’s terminal display.
4.2.3 Keypad information : Information representing the Client User’s key presses on the terminal keypad.
4.2.4 Server User : A user who is able to send display and receive keypad information. A Server User can be a user as defined in ISO/IEC 11574 but also a Telecommunication Application or a Server which is directly connected to the PISN.
5 List of acronyms
ANF Additional Network Feature
FE Functional Entity
ISDN Integrated Services Digital Network
PINX Private Integrated Service Network Exchange
PISN Private Integrated Services Network
SDL Specification and Description Language
SS Supplementary Service
SS-SD Supplementary Service Simple Dialog
TE Terminal Equipment
6 SS-SD stage 1 specification
6.1 Description
6.1.1 General description
SS-SD enables two users to communicate via the exchange ofdisplay and keypad information. The Server User is the user who exclusively sends the display information whereas the user who receives that information and who is able to answer the Server User with keypad information is called the Client User.