Thanks for the replies. As you can see, this problem isn't very high on my list of things to do!
Shale:
Ringback: I meant a ringback tone (like a fast busy), not that my phone is ringing.
I tried dialing out with **1, then 9145551212 (I figured that would at least test the system). I get the same problem with or without the prefix. My Anveo configuration is on SP1.
AlanB:
I don't know if I could call long distance with Anveo. I know it worked with Google Voice, though. As a test, I removed the X_InboundCallRoute filter and set it back to the 'ph' default, and I still could not dial out long distance (using directory assistance for 914 as a test). I agree that it ought not to be an Anveo problem, but I'm stuck between Obi and Anveo, so I'd probably start with them.
Any other ideas that I can try? Otherwise I'll open a support ticket with Anveo. I think I get one freebie per month.
Thanks,
Tom