1030 Hastings St
Traverse City MI 49686

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Founded in 1997, ISPhone Inc. is one of the leading voice over Internet protocol (VoIP) and Internet protocol telephony networks in the global market. Based in Traverse City, Mich., the company offers network, termination and billing services. It renders an array of services, including call termination, pre-paid and post-paid calling services, hosting and United States local and toll-free direct inward dialing (DID). ISPhone Inc. specializes in voice-over Internet protocol provider (voIP-PRO) software, an authentication, authorization and accounting (AAA) platform for use with Cisco, Quintum and other RADIUS-compliant gateways.