I had almost perfect setup with 1.3-2 stable. Just upgraded to 1.5-2 to fix some DTMF issues (Newer asterisk supposedly fixes it). Now I am getting echo to caller and called person on SIP trunk. The call is made from Asterisk -> SIP -> PSTN. I tried two different providers and both got echo. No changes were made in hardware. I also do not get echo on incoming PSTN via X100P. Any clues?