EchoLink System to connect amateur radio operators to repeaters, simplex links, and other hams. Includes interface information, documentation, and node information.
Internet Radio Linking Project (IRLP) High-end project to link repeaters worldwide via the Internet. Includes node status, hardware and linking information, and FAQ.
The Asterisk app_rpt Project Using open-source Asterisk PBX and Linux to build an internet linking platform to simultaneously control several repeaters at one site. Technical and contact information.
