US 6,636,601 B1Granted

Method for adapting supplementary equipment to an analog telecommunications terminal and device for that purpose

AssigneeDeutsche Telekom AG

InventorVolkmar Naumburger

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Abstract

A method for adapting supplementary equipment, such as automatic answering equipments, intercommunication stations, automatic dialers and the like, to an analog telecommunications terminal as well as to a technical device for the implementation of the method. The supplementary equipment is inserted into the voice-communication path of the terminal in that the network access line of the terminal is accessed and in that the picked-off incoming voice signal is sent to the supplementary equipment and to a voice input/output unit electrically separate from the terminal equipment. Outgoing signals are generated by the supplementary equipment and/or by the voice input/output unit and are, in turn, fed into the network access line. Conversely, dialing and other control signals are transmitted directly between terminal equipment and telephone network via the network access line.

Claims9

Dependent claims

A method for adapting a supplementary equipment to an analog telecommunications terminal equipment, the supplementary equipment including at least one of an automatic answering equipment, an intercommunication station, and an automatic dialer, and the analog telecommunications terminal equipment including a hybrid circuit arranged with respect to a network access line for connection to a telephone network and through which voice signals and signaling signals are capable of being transmitted, comprising the steps of:

providing a high-resistance access to the network access line while maintaining a line termination resistance for detecting the voice signals transmitted to the analog telecommunications terminal equipment;
supplying one of a picked-off speech signal and a speech signal proportional to the picked-off speech signal to the supplementary equipment and to a voice input/output unit that is electrically separate from the analog telecommunications terminal equipment;
causing at least one of the supplementary equipment and the voice input/output unit to generate an output signal;
providing a high-resistance feeding of the output signal into the network access line while maintaining the line termination resistance;
and
causing a direct transmission of the signaling signals between the analog telecommunications terminal equipment and the telephone network via the network access line.

3 more elements

A device for adapting a supplementary equipment to an analog telecommunications terminal equipment, comprising:

a network access line through which a connection to a telephone network is established;
a first interface for establishing a connection with the analog telecommunications terminal equipment, wherein the network access line is internally connected to the first interface;
an apparatus including at least one of a voice input/output unit and a second interface, wherein a connection with the voice input/output unit is established through the second interface, wherein the voice input/output unit activates a hybrid circuit of the analog telecommunications terminal equipment according to one of a mechanical activation and an electrical activation;
a third interface for establishing one of a connection and an integration with the supplementary equipment;
and
a high-resistance amplifier for accessing the network access line, the high-resistance amplifier producing an output signal that is routed to a first input of the supplementary equipment and to an input of the voice input/output unit, wherein an output signal of the voice input/output unit is routed to a second input channel of the supplementary equipment and is fed at a high resistance into the network access line.

3 more elements

Dependencies are inferred from the claim text.