Need info about SIP ALG

Hi,
I want to have SIP ALG support in openWRT.Iam looking at "sipath" which has SIP ALG support,but its been discontinued from souceforge.net.

The information i get when looking fo "sipath" in souceforge.net is that its been continued by milkfish.
Can any one help me as to where i can get the required tar files and how to configure them.
Also is "openSER" package same as "sipath" ??

Thanks in advance
-vinod