I'm trying to provide dial tone on E&M Wink type trunks. I found where in source, 'chan_zap.c' where I believe the code needs to be added. Basically I believe I can copy parts used for PRI in to E&M and E&M Wink signal types. However with my attempts, it fails to compile at chan_zap. And I'm not sure how to proceed now. It seems there should be a way to only recompile 'chan_zap.so' without doing a full recompile - Any help would be appreciated for this novice. Thanks, Bart