I don't know for sure, but it seems like Raizlabs might be interested in doing it (for free?)
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Originally Posted by Raizlabs website
We don't work for a phone company or for Vonage but we are interested in having our software support additional telephone providers in addition to Vonage. If you work for a telephone or cell phone company we would be interested in speaking with you about adding callto: support for your service as well as other features. Contact us at support@raizlabs.com |