Asterisk 1.0.9 with tcp?

Hi All:
As most people said, asterisk 1.0.9 can make integration with LCS.
So, I tried to do that.
The problem is : I check chan_sip.c find nothing about TCP sentence
after I download 1.0.9 from
Then, I found a chan_sip.c and chan_sip-1.0.9.c in … risk-tc….
I download and overwite the original chan_sip.c, but compiler report
too many errors.
Who can tell me something about this?
Any reply will highly appreciated!