Hi, I have some confusion about FreeSWITCH's Mozilla Public License 1.1. I do understand that me or any one can change provided code according to our customization needs and we are not bound to share our changes as long as we are not distributing it, right? Now, i have been doing R&D on MSN and Yahoo voice chat services, I have now completed by research and now would like to write up FS modules to communicate with these servers. But as you all know both MSN and Yahoo provide SIP based VOIP services, however they are not using standard SIP stack and have their own versions of customized SIP stack. So, in order to write an endpoint for these servers, instead of writing everything from scretch, i can using existing mod_sofia endpoint and customize it to make it compatible with MSN and Yahoo SIP stack. So here are my questions, 1. Is it possible under MPL, that i make a copy of mod_sofia as say mod_msn and develop it to work with MSN, similarly mod_yahoo for Yahoo voice chat service? 2. If yes, how can i mention my role in these modules development, i.e. as developer or as contributor? Also i wish to include my work, once completed, in FreeSWITCH, can you provide me the guidelines and / or eligibility criteria to do so, any link on FS site etc.? Thank you. -- Muhammad Shahzad ----------------------------------- CISCO Rich Media Communication Specialist (CRMCS) CISCO Certified Network Associate (CCNA) Cell: +92 334 422 40 88 MSN: shari_786pk@hotmail.com Email: shaheryarkh@googlemail.com