When I show hints in the console I can see that the status is IDLE yet the light stays green. I submitted a ticket with Sangoma support, but they only support FreePBX.
I have the phone set up with the default option for BLF in it’s web backend.
Asterisk’s sip.conf is close to default, besides my users, and the user is set up minimalistically:
[1000]
type=friend
secret=shhhh
host=dynamic
context=default