Other stuff that might help:
Our line share is getting dropped tomorrow and the porting should start, but the phone guy connected us to the dry loop last Friday and we've been making calls on the dry loop service no problem. We first had problems with calls coming in after that happened, but we figured out the machine was sending everyone straight to v-mail. After the phone guy came on Friday, we also chose the "2nd number" - is this part of the problem?
1. after the the dry-loop completed, when calling to the original land line, the caller will hear ring, but your phone will not ring.
2. calling to your 2nd number, actually this is your ooma issued number, it works as expected.
3. calling to your land line will ring your ooma phone after the port completed.
It up to you to decide to live with it or call your Telco. to ask them to auto forward all calls to your 2nd (ooma issued) number.
After the port completed, don't forget to call your Telco. again to settle (and prorated) your final bill, and ensure that the DSL bill will be delivered, especially if you have e-bill with them before.
Are you with ATT? I was with ATT, and It happened to me just like you experience.