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CornerStone Telephone Co.

  • Telephone Services
P.O. Box 509
Troy, NY 12181
(866) 240-1912
Trade for FAX line
(845) 469-9305 (fax)
  • About

    CornerStone treats all of our customers like VIPs, because our businesses depend on reliable phone and network performance. We have a team of specialists ready to help you with service requests, order

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