OFF allows the user to continue dialling for accessing computers, voice mail systems, etc. When the user's telephone is off-hook, Teleguard monitors outgoing digits dialled for programmed restricted or allowed numbers. If Teleguard detects any restricted numbers, it disconnects the call for a few seconds and then returns a dial tone so that the user can dial another number. Installation For Teleguard to control all telephones on the same line, it must be installed at the first telephone on the line from which all other extensions are connected. If Teleguard is installed at any extension telephone other than the first telephone then only that extension telephone's dialling operation is controlled by the unit.
Installation is very simple.
It involves only connecting the Teleguard to the telephone line with line cords equipped with modular plugs. The unique design of the housing of Teleguard prevents the modular plugs from being disconnected from it, after installation, without using tools.