Apparate mit einer oder mehreren Sonderfunktionen Zum Anschluss an bestimmte Oeffentliche Fernsprechnetze. Apparate mit Sperrvorrichtung fuer ausgehende Gespraeche Apparatus with one or more particular...
实施日期:1988-11-30
Electromechanical components for telephone switching system--Graphical symbols for operation sequence diagram
Design Specifications for PSTN Exchange Installation Engineering
实施日期:2006-01-01
Essential requirements for connection of terminal equipment to 2-wire analogue interfaces, without capacitive termination, of public switched telecommunication networks using either the earth calling, ...
实施日期:1996-09-15
Geraet zum Anschluss an oeffentliche Telekommunikationsanlagen unter Verwendung der digitalen Zugriffzeichengabe Nr. 2 (DASS 2) ueber eine Schnittstelle fuer 2048 kbit/s nach CCITT Empfehlung G.703. Al...
实施日期:1997-10-15
Standard for Quality Inspection and Evaluation of Petroleum Construction Engineering Telecommunication Engineering (Toll Transit Switching Equipment Installing Engineering)
实施日期:1994-05-01
Subscriber line signaling system for telephone automatic switching network
发布日期:1982-12-29 实施日期:1983-10-01
Generic specification for stored program control digital private automatic branch telephone exchange system
发布日期:1993-05-14 实施日期:1994-01-01
Technical requirements and test methods for ringing, power sources, alarm and distribuing frame in manual toll telephone switching equipments
Interoffice junction digital line signalling system for telephone automatic switching network
发布日期:1983-12-15 实施日期:1984-10-01
Accepting Specification for PSTN Exchange Installation Engineering
实施日期:2006-01-01
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