We have received a lot of e-mails about this, so here it is: You do NOT have to buy the Asterisk URI board or even modify a USB sound fob, if you already have an IRLP board and radio. In other words an IRLP user can directly control the Asterisk nodes (or the Echolink nodes) by just sending DTMF tones from the IRLP radio. No other software can do this right now. Not even Asterisk/app_rpt. The same is true for the Asterisk user. The Asterisk user can send DTMF tones to control the Echolink and IRLP nodes, and there is no need to buy an IRLP board or radio. Here is the surprise. If you have both an IRLP board and an Asterisk board(URI or modified USB sound fob), then you can control your nodes from either the Asterisk radio or the IRLP radio. Even better. rtpDir/rtpDir_tm bridge even allows you to have the IRLP node on a different machine from the Asterisk nodes. 73, de KI4LKF