Hi, > PCMU 8kHz > We're using Android. > Just to clarify. The caller can hear the recipient clearly when using > wifi or 3g, ?but the recipient (on GSM fixed network) > ?experiencesexperiences intermittent ?loss of sound and can't hear the > caller clearly.?Please provide some tips on how we can resolve the > issue where and how we can remove the delay being experienced during > conversation?? Did you try disabling AEC? Sounds to me like AEC kicking in on low quality input. Greets