Method for processing telephone signals supplied by an analog telephone terminal and data supplied by a data terminal

US6973180B1 · kind B1 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Paul Kunisch · Puchheim, DE
• Hans-Werner Rudolf · Munich, DE

Key dates

• Filing date: Aug 7, 2000
• Grant date: Dec 6, 2005
• Expiry date: Jun 10, 2023

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04M11/062
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

A method of handling telephone signals supplied by an analog telephone set and data supplied by a data terminal in a subscriber line circuit of a digital telephone switching system used at least in subregions for data transmission includes directly connecting a telephone set and a data terminal with a modem to the digital telephone switching system through a common analog subscriber line, at least one of subjecting data supplied by the data terminal to a sampling operation at a sampling rate above a sampling rate required for telephone information during analog/digital conversion and coding sampling values representing data supplied by the data terminal according to a linear characteristic during analog/digital conversion, and feeding data originating from and handled by the data terminal directly to a data transmission network. A subscriber line circuit for handling telephone signals supplied by an analog telephone set and data supplied by a data terminal is also provided.