I have recently moved an asterisk system to a new location. This location is experiencing terrible echo. I installed the HPEC from Digium but that has caused a new problem.<br><br>When HPEC is enabled and more that 16 taps are used, the audio from the outside caller gets clipped. Instead of hearing:
<br><br>Hello, my name is Mike<br><br>one hears<br><br>He o, m ame ike<br><br>If the taps are set to less than 16, there is no clipping, but there is significant echo.<br><br>I don't know if this is relevant, but asterisk does report "No Zaptel transcoder support" on startup.
<br><br>I am at my wits end; any advice would be greatly appreciated. My setup follows:<br>
<br>Hardware, AMD Athlon(tm) 64 Processor 3000+, 512MB ram, 2 TDM400p with a total of 5 fxo channels, snom 320 phones<br><br>OS: gentoo 2006.1 amd64<br><br>Software:<br>Asterisk 1.2.17 and Zaptel 1.2.16 (fxotune does not seem to work in this configuration)
<br><br>Also tried<br><br>Asterisk 1.4.2 and Zaptel 1.4.1 (fxotune does work, but doesn't seem to help in this configuration)<br><br>