OK!!!
Now is working, I can’t beleive it
More over it looks like an Key system, I can push the button in my Aastra and take the line and dial this is awesome!! and the led is blinking not solid but is not an issue, in the SIP trunks it shows the led solid.
Here is what I did.
I’m using trixbox, so I use the context :
[from-internal-custom]
…otherextensions…
exten => FXO1,1,Dial(SIP/FXO1)
exten => FXO1,hint,SIP/FXO1
In the sip_custom.conf
[FXO1]
…othersipstuff…
subscribecontext=from-internal-custom