Telephone or communication terminal with improved calling alert signal detection by using an activity detector

Abstract

A communication terminal comprising a receiving path and a sending path linked to the communication line, the receiving path being connected to a system able to detect, during a communication, an alert signal (e.g., a CAS signal) sent by a station (e.g., the local telephone exchange station or central office) upon any new call or connection request for the terminal and able to allow reception by the terminal, e.g., of data related to each new caller, by interrupting temporarily the presently existing communication, the terminal including a detector (7) able to detect any activity or any signal transmission, and/or the absence of the same, in the sending path (3) of the terminal (1) and to deliver a corresponding information signal (IS) to the signal detection system (5), the latter adjusting its detection method or mode or selecting a corresponding detection subsystem accordingly.

Dependencies are inferred from the claim text.