Hello, I have a rt-n16, install DD-WRT mega16785. I can make or pickup any call any internal ata without any problem. but Internet ata will ring, when pickup, not sound at all. after some research, I knew asterisk have a rtp problem with arm cpu. I make a clean install, I am follow this http://forums.plugpbx.org/index.php/topic,247.msg1168.html. on step 7, configure: error: cannot guess build type; you must specify one. I have no idea what should I do now. Thanks, Derick