One Response to “International Calling Cards: Can They Save Money on Domestic Calls?”

  1. PortaOne says:

    PortaOne solution platform PortaSwitch facilitates ITSPs to provide all types of services, including Calling Cards and Call Back. This comes along with billing, softswitching and media processing.
    http://portaone.com/products/portaswitch/overview/

    Please contact our sales team if you need more technical or pricing information about PortaSwitch.

    http://www.portaone.com/

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