Strange Echo with sangoma PRI

Hi All,

I was able to update system.conf through the GUI, thanks for the assistance Malcolm.
However, when running lsdahdi I don’t see that Oslec is actually being used (see bellow)

1 PRI Clear (In use)
2 PRI Clear (In use)
3 PRI Clear (In use)
4 PRI Clear (In use)

How can I verify it is actually being used?
Thanks
Isack