Provider recommendation please

At present I use iconnecthere.com. But the PAP2 they supplied is locked and
the Linksys SPA3000 I've got will not work with their service. It works ok
with my UK one.

I am looking for recommendations for a US VoIP provider who can supply me with
an Oregon number, who provides a good service and I can configure the SPA3000
to work with as the main service.

Any suggestions gratefully received.

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Telecom, Cabling and VoIP continues...