Business_telephone_system
's information is
Birth and death years unknown
A business telephone system is a telephone system typically used in business environments, encompassing the range of technology from the key telephone system (KTS) to the private branch exchange (PBX). A business telephone system differs from an installation of several telephones with multiple central office (CO) lines in that the CO lines used are directly controllable in key telephone systems fr
* Calculated from Wikipedia data.
Accuracy is not guaranteed.
Look up "Business_telephone_system" on WikipediaWikipedia Categories
Loading...