DIN - German national standards

Integrated Services Digital Network (ISDN) - Signalling System No. 7 (SS7); ISDN User Part (ISUP) version 4 for the international interface - Part 18: Completion of Calls to Busy Subscriber (CCBS) supplementary service.
(ISDN - Zeichengabesystem Nr. 7 (SS7); ISDN-Anwenderteil (ISUP) Version 4 für die internationale Schnittstelle - Teil 18: Dienstmerkmal "Rückruf bei Besetzt".)

Available languages: German

Available design: PDF - Immediate download, Print design

Integrated Services Digital Network (ISDN) - Signalling System No. 7 (SS7); ISDN User Part (ISUP) version 4 for the international interface - Part 19: Three-Party (3PTY) supplementary service.
(ISDN - Zeichengabesystem Nr. 7 (SS7); ISDN-Anwenderteil (ISUP) Version 4 für die internationale Schnittstelle - Teil 19: Dienstmerkmal "Dreierverbindung".)

Available languages: German

Available design: PDF - Immediate download, Print design

Integrated Services Digital Network (ISDN); Signalling System No. 7 (SS7); ISDN User Part (ISUP) version 4 for the international interface - Part 2: ISDN supplementary service.
(ISDN - Zeichengabesystem Nr. 7 (SS7); ISDN-Anwenderteil (ISUP) Version 4 für die internationale Schnittstelle - Teil 2: ISDN-Dienstmerkmal.)

Available languages: German

Available design: PDF - Immediate download, Print design

Integrated Service Digital Network (ISDN) - Signalling System No. 7 (SS7); ISDN User part (ISUP) version 4 for the international interface - Part 20: Completion of Calls on No Reply (CCNR) supplementary service.
(ISDN - Zeichengabesystem Nr. 7 (SS7); ISDN-Anwenderteil (ISUP) Version 4 für die internationale Schnittstelle - Teil 20: Dienstmerkmal "Rückruf bei Nichtmelden des gerufenen Nutzers".)

Available languages: German

Available design: PDF - Immediate download, Print design

Integrated Service Digital Network (ISDN) - Signalling System No. 7 (SS7); ISDN User part (ISUP) version 4 for the international interface - Part 21: Anonymous Call rejection (ACR) supplementary service.
(ISDN - Zeichengabesystem Nr. 7 (SS7); ISDN-Anwenderteil (ISUP) Version 4 für die internationale Schnittstelle - Teil 21: Dienstmerkmal "Anonyme Rufabweisung".)

Available languages: German

Available design: PDF - Immediate download, Print design

Integrated Services Digital Network (ISDN) - Signalling System No. 7 (SS7) - ISDN User Part (ISUP) version 4 for the international interface - Part 22: International Emergency Preference Scheme (IEPS) service.
(ISDN - Zeichengabesystem Nr. 7 (SS7) - ISDN-Anwenderteil (ISUP) Version 4 für die internationale Schnittstelle - Teil 22: Dienst "Internationales Notfall-Vorrangschema (IEPS)".)

Available languages: German

Available design: PDF - Immediate download, Print design

Integrated Services Digital Network (ISDN) - Signalling System No. 7 (SS7); ISDN User Part (ISUP) version 4 for the international interface - Part 3: Calling Line Identification Presentation (CLIP) supplementary service.
(ISDN - Zeichengabesystem Nr. 7 (SS7); ISDN-Anwenderteil (ISUP) Version 4 für die internationale Schnittstelle - Teil 3: Dienstmerkmal "Übermittlung der Rufnummer des rufenden Teilnehmers zum gerufenen Teilnehmer".)

Available languages: German

Available design: PDF - Immediate download, Print design

Integrated Services Digital Network (ISDN) - Signalling System No. 7; ISDN User Part (ISUP) version 2 for the international interface - Part 31: Protocol Implementation Conformance Statement (PICS) proforma specification for basis services.
(ISDN - Zeichengabesystem Nr. 7; ISDN-Anwenderteil (ISUP) Version 3 für die internationale Schnittstelle - Teil 31: Formular für die Erklärung zur Konformität der Protokollimplementierung (PICS) für Basisdienste.)

Available languages: German

Available design: PDF - Immediate download, Print design

Integrated Services Digital Network (ISDN) - Signalling System No. 7; ISDN User Part (ISUP) version 2 for the international interface - Part 32: Test Suite Structure and Test Purposes (TSS&TP) specification for basic services.
(ISDN - Zeichengabesystem Nr. 7; ISDN-Anwenderteil (ISUP) Version 3 für die internationale Schnittstelle - Teil 32: Prüfreihenstruktur und Prüfzweck (TSS&TP) für Basisdienste.)

Available languages: German

Available design: PDF - Immediate download, Print design

Integrated Services Digital Network (ISDN) - Signalling System No. 7 (SS7) - ISDN User Part (ISUP) version 4 for the international interface - Part 33: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for basic services.
(ISDN - Zeichengabesystem Nr. 7 (SS7) - ISDN-Anwenderteil (ISUP) Version 4 für die internationale Schnittstelle - Teil 33: Abstrakte Prüfanweisung (ATS) und zu vervollständigendes Formular für Zusatzinformationen zur Prüfung der Protokollimplementierung (PIXIT) für Basisdienste.)

Available languages: German

Available design: PDF - Immediate download, Print design