The feature that you have requested is available if you have our Verizon FIOS Digital Voice service. If you do have this service please head to http://www.verizon.com/fiosvoice where you will be able to activate the feature. If you do not currently have FIOS Digital Voice you can contact our customer service office at 1-800-837-4966 and see if you eligible for this service.
--James Verizon Support
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