Published Date: 12/01/1999

Integrated Services Digital Network (ISDN); Subaddressing (SUB) supplementary service - Digital Subscriber Signalling System No. one (DSS1) protocol - Part 4: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the user (Endorsement of the English version EN 300061-4 V 1.2.4 (1998-06) as German standard)

$5.232

DIN EN 300356-21

Published Date: 01/01/2002

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 (ITU-T Recommendation Q.731, clause 4 (1993)) (Endorsement of the English version EN 300356-21 V 4.2.1 (2001-07) as German standard)

$5.232

DIN EN 300403-7

Published Date: 12/01/2000

Integrated Services Digital Network (ISDN) - Digital Subscriber Signalling System No. one (DSS1) protocol; Signalling network layer for circuit-mode basic call control - Part 7: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the network (Endorsement of the English version EN 300403-7 V 2.1.2 (2000-02) as German standard)

$5.232

DIN EN 60843-2

Published Date: 12/01/1995

Helical-scan video tape cassette system using 8 mm magnetic tape - 8 mm video - Part 2: PCM multi-track audio system (IEC 60843-2:1992); German version EN 60843-2:1995

$22.236