asterisk users - Jun 2005 - Connecting Asterisk with Microsoft LCS (Live Communication Server)

Hello,

   im trying to connect LCS to asterisk which will act as pstn gateway for LCS.
Microsoft system supports only SIP TCP connections but asterisk UDP.
   im was searching about conversion beetwen TCP and UDP and i found that SER
can do that but i don't know SER and my trying to configure SER fails.
   is there any other possibility to connect this together?
   Maybe someone has correct config files for SER?

Thanks in advance,
Adam