Diego,
On Mon, Feb 3, 2014 at 4:31 PM, Diego Fernandez Alonso diegoferalonso@gmail.com wrote:
3-Although I don’t have the isdn card yet, for testing some configurations in the PC I followed the “Building and Running OpenBSC with Asterisk” Pierre Kim guide, that I believe is newer than the “How to OpenBSC with Asterisk and LCR”, and I haven’t problems with the installations. So if I run the lcr: [....] My question in this point, is it only necessary to connect the BTS to the isdn card with the right OpenBSC to finish the system configuration?
If you want to have calls being routed through SIP, you don't need an ISDN card. Your steps are:
1. Configure OsmoNITB with "-m" command line parameter to enable MNCC call routing.
2. Compile LCR with SIP support and without Asterisk support.
3. Configure LCR to run in a "bridge" mode between the GSM and SIP interfaces.
4. Run LCR on the _same_ machine as your OsmoNITB.
5. If you correctly configured LCR's SIP interface, all calls will be routed through your Asterisk/Freeswitch.
Looks for more details here: https://openbsc.osmocom.org/trac/wiki/network_from_scratch