The OpenSER web site Wiki has a little information about these two products. They both work and I've used them both. They both have advantages and disadvantages that have been discussed on the mailing list. Don't want to rehash that topic. You can probably find a lot of good discussion about this on the mailing lists. The mailing list archives are now searchable at: http://www.nabble.com/OpenSER---the-Open-Source-SIP-Server-f26014.html In reference to compiling, mediaproxy is written in python and does not require any compilation (however, you to need to have python installed on your system). rtpproxy is written in c and will require recompilation. An apt-cache search of both products returned no results on my debian system. Since both products live outside of OpenSER, there is no need to "start over". You just have to pick the product to use and install it. Regards, Norm http://openser.org/dokuwiki/doku.php Arya wrote: