A telecommunications system infrastructure that facilitates easy insertion of feature software into existing such telecommunications systems and easy integration of the new calling features and their implementing software with existing features and their software. The infrastructure comprises the...http://www.google.fr/patents/US5717747?utm_source=gb-gplus-shareBrevet US5717747 - Arrangement for facilitating plug-and-play call features
Arrangement for facilitating plug-and-play call features
