I don't know if this is in the right forum?
I have just switched ISP from stuff to trustpower, previous my phone was done through an ATA box connected by ethernet and the landline was connected to the ATA, it was handy as you downloaded the phone app from stuff so you could use your mobile to phone any where in the country free only landlines.
My problem is I have disconnected the ATA and the landline doesn't work but the mobile app is still working. Are there any phone technician here that can help. I have tried contacting Trustpower but haven't had a reply surprise, I don't think they know either.