I’ve installed Asterisk/CentOS using Vmware 5.0 on my winxp laptop to show it as a proof of concept. Even though calls between extensions are working well, I hear no voice coming when I try voicemail and the call drops when I dial e.g. *99 after 6-7 seconds. When I took a tcpdump of RTP/RTCP of voicemail I saw that there is no RTP/RTCP going out of the IP address Asterisk is using, I do see RTP coming in from my winxp IP where I have my X-lite client running so there is one way speech. I think the call drops due to codec negotiation failure (my guess, I don’t see it in the debug log). I searched for similar problems on the net but didn’t see any. I know this is a weird configuration but I think it should work, any help or suggestions are welcome to correct the problem.