Patent ID: 7304962
Filing Date: 2007-12-04
Classification: H04B,H04L,H04M

Abstract:
1. A method for providing information of an echo path of a speech connection in a Packet Data Network, comprising: requesting delay information via devices for triggering echo removal, said delay information being obtained by signaling a non-speech measurement data unit to said Packet Data Network via an echo estimation unit and measuring a delay of an echo caused by said non-speech measurement data unit via said echo estimation unit; replying to the echo delay of said non-speech measurement data unit from said echo estimation unit; generating delay information including at least said echo delay of said non-speech measurement data unit; and adjusting a shift register which is related to an echo removing device via said delay information such that performance of said echo removing device is optimized; wherein if said echo removing device is an echo suppressor, said shift register is adjusted such that timing of a switching function of said echo suppressor is appropriate for a round-trip delay of said speech connection such that the performance of said echo suppressor with respect to a capability to remove echoes is optimized.