Importance

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Abstract

An improved telephone monitoring and recording apparatus is described. The monitoring and recording apparatus is connected in parallel with one or more telephones for the purpose of recording in memory and printing out on paper for each call detected, information which is typically: the number dialed, the time and date the call was made, and the duration of call. Other information which is also monitored and recorded in memory is also typically; the station originating the call, the number of rings, whether the destination was `busy` and whether there was a voice communication. These and other similar information requests may be programmed in at installation using a keyboard, and printed out on the printer which is part of the apparatus. The equipment is improved in that it can be used with any telephone set up desired, without modification. It can identify both rotary pulse dialed and 'Touch Tone' dialed numbers without manual selection and switching. It will maintain itself monitoring and recording (but not printing) even when power is lost for periods of time. It can not be easily defeated or interfered with, without a record being made of the interference and an alarm being given. The keyboard is removable after operation is initiated, so as to make the equipment secure from interference.

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First Claim