O1 Communications

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Established in 1998, O1 Communications is a full-service telecom company that provides hosted and managed communication solutions for small- and medium-sized businesses throughout California. It offers network monitoring, Internet access, unified messaging, Web hosting, voice mailing, conference call and long-distance telephone services. Additionally, the company provides caller identification, call hold, speed dialing, data management, and call transfer and forwarding solutions. It also offers design, engineering, telephone wiring, domain registration and technical support solutions. In addition, the company provides maintenance, installation, training, marketing, delivery and 24-hour emergency services. It owns and operates a more than 10,000-square-foot collocation facility. O1 Communications is headquartered in Sacramento, Calif.