Information processing; conversion between the two coded character sets of ISO 646 and ISO 6937-2 and the CCITT international telegraph alphabet No. 2 (ITA 2)
Edition 1988-09

Alarm systems - Part 7-6: Message formats and protocols for serial data interfaces in alarm transmission systems - Alarm system interface employing CCITT V24/V28 signals (IEC 79/180/CDV)
Edition 1999-10-01

Alarm systems - Part 7-11: Message formats and protocols for serial data interfaces in alarm transmission systems - Serial protocol for use in digital communication systems using CCITT V23 signalling at interfaces with the PSTN (IEC 79/182/CDV)
Edition 1999-10-01

Alarm systems - Part 7-12: Message formats and protocols for serial data interfaces in alarm transmission systems - PTT interfaces for dedicated communications channels using CCITT V23 signalling (IEC 79/183/CDV)
Edition 1999-10-01

Alarm systems - Part 7-20: Message formats and protocols for serial data interfaces in alarm transmission systems - Terminal interfaces employing CCITT V24/V28 signalling (IEC 79/184/CDV)
Edition 1999-10-01

Information processing. Conversion between the two coded character sets of iso 646 and iso 6937-2 and the CCITT international telegraph alphabet no 2 (ita 2)
Edition 1988-12-01

Integrated Services Digital Network (ISDN). Application of the ISDN user part (isup) of CCITT signalling system number 7 for international ISDN interconnections (isup version 1)
Edition 1996-12-01

Integrated Services Digital Network (ISDN). Syntax-based Videotex lower layers protocols for ISDN packet mode (CCITT Recommendation X.31 Case A and Case B)
Edition 1998-05-01

Transmission and multiplexing (TM). Generic frame structures for the transport of various signals (including asynchronus transfer mode (ATM) cells and synchronous digital hierarchy (SDH) elements) at the CCITT recommendation G.702 hierarchical rates of 2048 kbit/S, 34368 kbit/S and 139264 kbit/S
Edition 1996-12-01

Integrated Services Digital Network (ISDN). Signalling System n o 7 ISDN User Part (ISUP) version 2 for the international interface . Part 1: basic services
Edition 1997-07-01