Hi, I'm having trouble with asterisk: I can't hear both way of a call. here is my current architecture: grandstream -> siproxd -> asterisk -> pstn As I'm just testing for the moment, evrything is on my LAN. I know that there is no need to have a proxy here. But Later, the asterisk will be on a public IP outside of my LAn, so I'm practising... And there is no direct communication between asterisk and my phone (tcpdump is my friend) Well everytime I try a call a pstn number from the grandstream phone, I can get the call and speak, my friend who's got the pstn can hear me... But I can't hear him... Does anybody has any idea of the problem ? chris -- Christophe Sauthier <christophe.sauthier@eikonex.net> Eikonex - Open Source Engineering (http://www.eikonex.net)