Patent ID: 6847702
Filing Date: 2005-01-25
Classification: H04B,H04M

Abstract:
1. A method for a system including a plurality of encoders each for receiving a digital signal to generate a respective encoded signal, a generator for generating a test signal, a plurality of cards each coupled to a respective conductor for sending signals to a respective subscriber, the method comprising the step, performed in each card, of maintaining a first current path between a respective encoder and the respective conductor, to transfer the encoded signal from the encoder to a respective subscriber, and the following subsequent steps, performed in one of the cards, of breaking the first current path; making a second current path between the generator and the respective conductor, to transfer the test signal from the generator to the conductor, and the following step, performed currently with the two previous steps, in remaining ones of the cards, of maintaining the first current path between the respective encoder and the respective conductor, to transfer the respective encoded signal from the encoder to the respective subscriber; and connecting another encoder to the second current path.