Patent ID: 8238546

Claim:
An echo canceler circuit comprising: an uplink data attenuator operative to receive post-echo canceler uplink data and uplink echo return loss based attenuation data and in response to attenuate the post-echo canceler uplink data to produce attenuated uplink data; a downlink data attenuator operative to receive downlink data and downlink echo return loss based attenuation data and in response to attenuate the downlink data to produce attenuated downlink data; an echo return loss based attenuation data generator operatively coupled to the uplink data attenuator and the downlink data attenuator and operative to produce the uplink echo return loss based attenuation data and the downlink echo return loss based attenuation data in response to instantaneous echo return loss data wherein the instantaneous echo return loss data is based on at least one of: attenuated downlink data, pre-echo canceler uplink data and amplifier gain data, wherein the echo return loss based attenuation data generator is operative to calculate the instantaneous echo return loss data based on a ratio of the attenuated downlink data and the pre-echo canceler uplink data and in response to produce the uplink echo return loss based attenuation data and the downlink echo return loss based attenuation data based on at least the instantaneous echo return loss data.