Modem-telephone coupler

Details Modem-telephone coupler Modem-telephone coupler

1991-10-21

1993-08-24

Schreyer, Stafford

Telephonic communications

Terminal accessory or auxiliary equipment

Including coupler

379 93, H04M 1900

Patent

active

052395804

ABSTRACT:
Coupling device for the connection of a Data Circuit Terminating Equipment DCE to a given Public Switched Telephone Network PSTN and to a local telephone set. The coupler includes means for providing said local telephone set with DC current whereby the microphone and the headphone of the telephone can be used respectively for transmitting and receiving vocal messages from the a DTE which is connected to said DCE. The invention also provides a DCE for the connection of a DTE to a a PSTN and to a local telephone set including a coupler circuit having the electronic components matching the electric requirements of a given PSTN. The coupler further includes means for providing the telephone set with DC current whereby vocal messages can be transmitted and received from the DTE to the telephone set. The invention further provides a DCE for the connection of a DTE to a PSTN and to a local telephone set which includes means for removably attaching a coupler circuit having the electronic components matching the electrical requirements of a given PSTN and further including means for providing the telephone set with DC current whereby vocal messages can be transmitted and received from the telephone set to the DTE.

REFERENCES:
patent: 4791658 (1988-12-01), Simon et al.
patent: 4799144 (1989-01-01), Parruck et al.
patent: 4987586 (1991-01-01), Gross et al.

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