I've been bashing my head off this for a few days now and I'm hoping someone here might be able to help. I'm not new to Asterisk and am very good with Linux but I can't figure out what's going on here. I've setup ASL and built a cm108 usb fob with COS and PTT for a simplex node. Radio->ASL works great. The audio is clear and it can decode DTMF. ASL->Radio doesn't work. Even when connecting headphones directly to the fob I do not hear any audio in either channel. The strange bit is that PTT and audio both work if I choose (F)lash in simpleusb-tune-menu. My radio transmits the test tones just fine. Audio also comes through if I shut down Asterisk and play a couple .wav files through the fob using aplay while manually holding PTT. For some reason ASL just won't send audio out through my device. I'm stumped. Any/all suggestions welcome!