Louisville, Colorado-based Zayo Group, the bandwidth and fiber provider, said today that it has signed a Cleveland firm for its dark fiber services. Zayo said it has added T1Company, a provider of high-speed dedicated access and hosted Cisco VoIP services, as a customer. Financial details of the win were not disclosed. Zayo will provide T1Company with connection into downtown Cleveland. T1Company provides leased lines, managed firewall and VPN, hosted VoIP, web and email hosting, colocation, data storage and retrieval to its customers.