Calls from BTS to PTSN planification doubts

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Alexander Chemeris alexander.chemeris at gmail.com
Mon Feb 3 13:22:13 UTC 2014


Diego,

On Mon, Feb 3, 2014 at 4:31 PM, Diego Fernandez Alonso
<diegoferalonso at 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

-- 
Regards,
Alexander Chemeris.
CEO, Fairwaves LLC / ООО УмРадио
http://fairwaves.ru




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