Hi all, I thought I'd pass along a working usbradio.conf for anyone trying to get an IRLP board going on Asterisk. Consider this file to be a template to get started with. I haven't managed to get the AUX 1,2,3 outputs going yet, but PTT and COS seem to be working FB. My node radios have built-in PL squelch, which I'm using at the moment. I'm also using the software DTMF decoder. At this point, I'm using an unmodified CM108 fob and my homebrew IRLP board. 73. Kyle K0KN ; ; Usbradio channel driver Configuration File ; [general] [usb2210] ; IRLP board support pp3 =  ptt       ; out0, out1 or ptt ; pp10 = in        ; in, cor or ctcss ; pp12 = in        ; pins 10,12,13,15 are for DTMF ; pp13 = in          ; pp15 = in         pp11 = cor ; pp4 = out0      ; pins 4,5,6 are AUX 1,2,3, default off ; pp5 = out0     ; pp6 = out0     hdwtype=0     rxboost=1 txboost=1 rxctcssrelax=1 txctcssdefault=100.0 rxctcssfreqs=100.0 txctcssfreqs=100.0 rxctcssoverride=0 ;carrierfrom=dsp carrierfrom=ppinvert ;ctcssfrom=dsp ;ctcssfrom=pp rxdemod=flat txprelim=yes txlimonly=no txtoctype=notone txmixa=composite txmixb=no invertptt=0 duplex=0 rxondelay=0 rxnoisefiltype=0 eeprom=0 #includeifexists custom/usbradio.conf