On Fri, 03 Aug 2012 11:51:42 +0500, Muhammad Yousuf Khan wrote: > is there any substitute of office communication server in Linux for > inter office communication, voice, video, chat file transfer (support > centralized environment not just work on broadcast for e.g unlike > outlook messanger). http://en.wikipedia.org/wiki/Microsoft_Lync_Server#Competition Greetings, -- Camaleón