Канал на RUTUBE: 
DIGITAL SWITCHING SYSTEMS
SWITCHING SYSTEM SOFTWARE: Introduction, Basic software architecture, Software architecture for level 1to 3 control, Digital switching system software classification, Call models
Источник: rutube.ru
SWITCHING SYSTEM SOFTWARE: Introduction, Basic software architecture, Software architecture for level 1to 3 control, Digital switching system software classification, Call models
Источник: rutube.ru
