Just have a new S20. I configured the device to my provider sip trunk account, all setting are fine and its connected. I checked to make a call to that sip trunk number, its perfectly connected. But outgoing calls, defenately not working. When I connect my IP Phone directly to that sip trunk, I can make a calls without amy problem.
Second, about Linkus. I dont see any option to configure Linkus in. Y S p device. I have install the Linkus app in the app center. But try to scan the qr code, its failed to connect from my IOS device.