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Access and Terminals (AT) - 2 048 kbit/s digital unstructured leased line (D2048U) - Connection characteristics
Available languages: English
Available design: electronic design (pdf), Print design
Access and Terminals (AT) - 2 048 kbit/s digital unstructured leased line (D2048U) - Terminal equipment interface
Available languages: English
Available design: electronic design (pdf), Print design
Environmental Engineering (EE) - Earthing and bonding configuration inside telecommunications centres
Available languages: English
Available design: electronic design (pdf), Print design
Private Integrated Services Network (PISN) - Specification, functional models and information flows - Call diversion supplementary service [ISO/IEC 13872 (2003), modified]
Available languages: English
Available design: electronic design (pdf), Print design
Private Integrated Services Network (PISN) - Inter-exchange signalling protocol - Call diversion supplementary service [ISO/IEC 13873 (2003), modified]
Available languages: English
Available design: electronic design (pdf), Print design
Private Integrated Services Network (PISN) - Specification, functional model and information flows - Path replacement additional network feature [ISO/IEC 13863 (1998) modified]
Available languages: English
Available design: electronic design (pdf), Print design
Private Integrated Services Network (PISN) - Inter-exchange signalling protocol - Path replacement Additional Network Feature (ANF) [ISO/IEC 13874 (2003), modified]
Available languages: English
Available design: electronic design (pdf), Print design
Private Integrated Services Network (PISN) - Specification, functional models and information flows - Call transfer supplementary service [ISO/IEC 13865 (2003), modified]
Available languages: English
Available design: electronic design (pdf), Print design
Private Integrated Services Network (PISN) - Inter-exchange signalling protocol - Call transfer supplementary service [ISO/IEC 13869 (2003), modified]
Available languages: English
Available design: electronic design (pdf), Print design
Integrated Services Digital Network (ISDN) - Telephony 7 kHz, videotelephony, audiographic conference and videoconference teleservices - Digital Subscriber Signalling System No. one (DSS1) protocol - Part 1: Protocol specification
Available languages: English
Available design: electronic design (pdf), Print design