Hello! I have found a very strange echo problem with different devices. When then user starts speaking there is no echo, but after about 1 minute of talking echo begins. If user stop talking echo disappears and again when user start talking there is echo again after about 1 minute talking. What is this? Codec is G711a, FreeSWITCH Version 1.0.head (git-abc5d7c 2011-10-18 20-48-34 -0400). Any help please. -- Regards, Boris