Internet phone service providers

Billing Software service providers

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Advanced VoIP Adwell Communication LLC Best2Call CallTower, Inc. Compro Technologies, Inc. Doretel Communications, Inc. Freeway Communications LLC Global Crossing GlobalPhone IP Communications IVR Technologies, Inc. Inovaware Corporation Integrated VoIP Solutions Internet

Mconnect, Inc. MeritCall Telecommunication Multi-Tech Systems, Inc Novolink Communications Parwan Electronics Corp. R-R Telecom RB Telecom SMART NETWORK SOLUTIONS Solegy Super Technologies Inc. UBIfone Global VoIP Atlantic, Inc. XO COMMUNICATIONS INC deltathree