Thank You. I don't have another phone on hand but the phone is a two line phone, the other line going to a landline, and that is working fine. So i imagine its not the phone. I guess time for a new router then?
1. Can't you do a test by swapping over the two lines into the phone?
2. Did you write "router" in error or are you really under the mistaken impression that a new router will fix the problem?
3. Have you tried power cycling tthe OBi110? And if still getting nowhere you have little to lose by a factory reset.
https://www.obitalk.com/info/faq/Troubleshooting-sec/How-to-Factory-Reset