Call agents and systems and methods for providing emergency...
Call diverter function in an early care telephone system
Call interceptor for emergency systems
Call selecting apparatus for preferentially connecting emergency
Cellular and battery backup telecommunication system
Cellular digital packet data (CDPD) network transmission system
Cellular interface unit for use with an electronic house arrest
Cellular network data transmission system
Cellular network data transmission system
Cellular network data transmission system
Cellular network data transmission system
Coin operated telephone operation monitoring switch mounting arr
Combination telephone set and security panel monitor
Communication lines with terminate and leave capability-DC alarm
Communication network for providing emergency services
Communication system and communication control apparatus
Communication system and method for notifying persons of an...
Communications system
Community alarm/notification device, method and system
Community emergency telephone notification system