Call One connects us from mile to magnificent mile. -Greater Michigan Avenue Association
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VoIP
Call One VoIP technology converges voice, data and video communications and PBX applications on a single network, “hosted” at the carrier network operating centers or “premise-based” through the client’s server system.  Call One IP Concierge is a customized open source software iPBX designed for each client's particular voice, data and internet applications. Unlike traditional IP phone systems or carrier “hosted” IP networks services, IP Concierge runs on open source software over industry standard servers across your existing IP network. No expensive hardware. Flexible architecture. Easy to deploy, manage and expand.

VoIP Flow Chart