Signal processing device for telephone apparatus, has output module, which is connected with port to provide output signal at port, and detection module is provided, which is connected with port for monitoring output signal

摘要

The signal processing device (100) has an output module (104a,104b,104n), which is connected with a port (108a,108b,108n) to provide an output signal (S-1-S-n) at the port, and a detection module (105a,105b,105n) is provided, which is connected with the port for monitoring the output signal. A timing control (1021) is connected with the detection module. The detection module produces a detection result corresponding to a detection release signal (S-enable). An independent claim is also included for a method for detecting a connection status of a port.