ET Networks Provided by PSTN

If a business has little capital resources for an internal department to manage the telephone network, it often looks to PSTN to provide telephony services. A business might also use PSTN because it is too large for an internal Information Services (IS) department to efficiently manage the entire network, so the telephony network is outsourced through a VPN to the PSTN carrier. The three PSTN-provided telephony networks include the following:

• A simple business line

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