I added the stun server as suggested, but no luck.
I have centurylink as ISP provider. I do not have a 2-wire modem from U-Verse.
I tried downloading the softphone from LoacalPhone, and that works fine with incoming calls. So, there is some setting on the Obi that is preventing this. Any other provider I have used on the Obi has had no problem with incoming.
Any other ideas?