O1 Communications | WhichVoIP Directory
Overview
O1 Communications is a facilities-based CLEC offering voice, data, and colocation services to California’s small, medium, and enterprise businesses. O1 also provides wholesale SIP origination in California and national termination. O1's wholesale VoIP carrier services include origination/termination, turn-key VoIP services, integrated portal access/OSS services, billing, and E911 with very competitive rates and guaranteed 24-hour turn-up.
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