Looks fine... I will need to see the manager output when you do some calls out or in your dahdi trunks. You will have to stop fop2 service:
service fop2 stop
And then start it from the command line:
cd /usr/local/fop2
./fop2_server -X 1
Then make a couple of calls, I am interested in the "Channel" entries in the manager output. If they look like DAHDI/2, then it must work.
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Nicolás