OpenBSC with LCR/SIP

Hello list, First of all congratulation to developers of this project making such wonderful project in an interesting subject. I am new to this project and for past few days i managed to go through the documentation and get most of it tested. Thanks for pretty good documentation in most of the areas as well. I have the osmo-nitb working very fine using a nano bts. How ever when i try to install it with LCR to interconnect with external switch, im facing some problems. Initially i thought i must use LCR+Asterisk. But later i figured out there is a built in SIP interface on LCR which there is no need to asterisk or chan_asterisk. I would prefer to use this LCR SIP interface as i dont want to use asterisk and just want to forward all calls to another SIP switch. Now in this context there seems absolutely no documentation on both openbsc and LCR/mISDN lists. Can some one please shed me some light here on how to build a LCR with SIP to be work with osmo-nitb. All i want to test is GSM phone > Osmo-nitb > LCR with SIP > SIP softswitch Thank you very much for every one's effort in this project and would be glad to see some response for this. Best Regards Nava.