Are you running 3 nodes on this server or just two? Because your lsusb output suggests that you are running 3 URI's. If that's the case asterisk might be getting confused on which usb device is which. Before you go through the hassle of recompiling everything try unplugging all of the radio interfaces, run asterisk and look for the segfault. Next, add one back, restart asterisk and see what happens, etc...You see where I am going with this? Try them all, maybe even in different ports. If you are still having problems, download the new sources and compile. I suggest you back up of the .conf files in /etc/asterisk, then obtain the new source code. Per the instructions on the Allstar webpage, you can get it in the following fashion: cd /usr/src/ wget http://x.allstarlink.org/svn-trunk.tar.gz -O- | tar xzv mv trunk astsrc cd astsrc Then you can use the make command. I think make install_usbradio is correct for your situation, I am not where I can check my notes. Someone else might be able to suggest something different. Good LUCK!!! Mark - WL7NI