With much playing around I managed to get it working (sort of).
Two issues still
- When I click on the dahdi extension that I had created already, it does not let me enter a channel number, all there is is a drop down list and the list is empty. If I manual edit chan_dadi_additional.conf and restart asterisk it then works. How can I get it that I can edit it from the freepbx interface
- There appears to be a bug in the freepbx interface, if I make changes using the dahdi module it writes it out without commas. It writes this:
fxols=25-4749-7273-9697-120121-144
Instead of this:
fxols=25-47,49-72,73-96,97-120,121-144
And then dahdi cant reload.
Also dahdi gives an error about this line:
echocanceller=oslec,25-4749-7273-9697-120121-144
It says invalid argument.
Thanks