Improvements relating to caller identification

Details Improvements relating to caller identification Improvements relating to caller identification

H - Electricity

04

M

H04M 1/57 (2006.01)

Patent

CA 2111862

2111862 9222974 PCTABS00018 A device for connection to a switched communication network to identify a calling subscriber (1) to a receiving subscriber (2) comprises a frequency generating device (36). The frequency generating device (36) generates a set of frequencies by which a calling subscriber (1) may be identified in response to connection between the calling subscriber (1) and receiving subscriber (2). The system may use monofrequencies on a chromatic scale capable of being generated by a human voice or DTMF frequencies. For DTMF frequencies the system may work automatically, semi-automatically by pressing a switch to activate the frequency generating assembly (36), or at fixed intervals.

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