Welcome to OP25 OP25 is a project that brings together folks that are interested in software for processing APCO P25 traffic which is available under the GNU Public License (GPL). We have implemented software-defined radios for transmit and receive, a library for processing P25 traffic and patches to add P25 support to the WireShark network traffic analzyzer. The project's wiki, bug tracking, and source code viewer can be found at http://op25.osmocom.org. If you've got questions about installing or using OP25 please subscribe to the op25-dev mailing list (http://tech.groups.yahoo.com/group/op25-dev) and post your questions there. Please see the file COPYING for the license.