Digital telecommunications terminal, especially a telephone subscriber station

Abstract

Abstract 1. A digital telephone terminal, especially a telephone, comprising - a digital interface (1) for connection to a digital telephone network, - a further interface (3) for the connection of ancillary equipment (ZPrA, ZPrB, ZPrC), and - a digital controller (ST) including a tone generator (5), characterized in that the further interface (3) for connection of analog ancillary equipment (ZPrA, ZPrB, ZPrC) is designed as an analog a, b-interface, that to this analog surface (3) an interface module (4) is connected to provide a connection to the tone generator (5), to the controller (ST), and to a call charge pulse generator (6) for generating analog call signals or call charge pulses, respectively, and that the interface module (4) is connected to the digital interface (1) through a PCM-CODEC (2), wherein the interface module (4) performs feeding of the voice circuit, two-wire/four-wire conversion, monitoring of the loop condition, connection of the cell charge pulse generator, and control of the receiving and transmitting amplification.

Inventors

• 👤 Jens Dr. Weber
• 👤 Horst Dr. Ramin

Bibliographic Details