TELEPHONE SWITCHING EQUIPMENT NAMELY

Brand	Owner	Address	Description
D M S	NORTEL NETWORKS LIMITED	5945 Airport Road Suite 360 Mississauga, Ontario L4V1R9 Canada	TELEPHONE SWITCHING EQUIPMENT-NAMELY, DIGITAL SWITCHING UNITS FOR INTERCONNECTING TELEPHONE SUBSCRIBERS, AND CONTROL TERMINALS;
	Where the owner name is not linked, that owner no longer owns the brand

Technical Examples

For analog telephone service subscribers, an apparatus and a method is provided for displaying a caller's originating number and/or the current time of day on the subscriber's incoming call line identification equipment. The subscriber's originating telephone number is obtained from a database within the telephone switching system providing POTS service to the subscriber. The time of day is obtained from a real-time clock within or in communication with the telephone switching system. Data is preferably transmitted to the subscriber's equipment by analog frequency shift keyed protocol.