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    This guide gives expert advice on how to pursue voice certifications that complement your career and help you learn about your company's equipment.

  • VoIP: Glossary

    This handy glossary will assist you with terminology related specifically to voice over IP.

  • data transfer rate (DTR)

    The data transfer rate (DTR) is the amount of digital data that is moved from one place to another in a given time. (Continued...)

  • analog telephone adapter (ATA)

    An analog telephone adaptor (ATA) is a device used to connect a standard telephone to a computer or network so that the user can make calls over the Internet.

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  • How can we have a unified communications architecture for VoIP?

    How can we have a unified communications architecture for VoIP?  Ask the Expert

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    How does Vonage work for international calls?  Ask the Expert

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    We have a centralized database online system with hub and spoke network architecture. On top of this we have our own VPN setup. Our users either connect through VSAT or dedicated leased lines for accessing our system with ISDN as a last mile backup c...  Ask the Expert

  • ISDN, MPLS and VSAT

    We have a centralized database online system with hub and spoke network architecture. On top of this, we have our own VPN setup. Our users either connect through VSAT or dedicated leased lines for accessing our system with ISDN as a last mile backup ...  Ask the Expert

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