System and method for restricting and monitoring telephone...

System and method for restricting and monitoring telephone...

System and method for secured network access

System and method for telephone operation in quiet mode

System and method for telephone operation in quiet mode

System and method of detecting unauthorized use of identifiers

System and method therefor of preventing fraud on pay phone...

System and method to discriminate call content type

System and process for automatic storage, enforcement and overri

System and process for automatic storage, enforcement and...

System and process for automatic storage, enforcement and...

System for detection and prevention of telecommunications...

System for managing telecommunications

System for managing telecommunications

System for managing telecommunications

System for providing communications services in a telecommunicat

System for securing access to equipment connectable to a telepho

System for selectively receiving telephone calls

System for selectively receiving telephone calls

Systems and methods for graphically displaying and analyzing...