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Aligning SIP requirements to WAN infrastructure takes time

What you need to measure when evaluating SIP services from your WAN services provider.


Got bandwidth? How to ensure you have enough

Figuring out how to calculate bandwidth requirements is vital to ensuring your network runs smoothly, and it's best to get the formula correct from the beginning.


How different noise types affect the network

Learn about the different types of noise in data communication -- including thermal, intermodulation, cross-talk, impulse and shot noise -- and how they can affect your network.


The best VPNs for enterprise use

This slideshow highlights the best VPNs used in enterprise wide-area networks (WANs) and offers principles for designing and implementing virtual private network (VPN) clients in the enterprise.

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Wide Area Network (WAN) Basics

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    Bandwidth is the capacity of a wired or wireless network communications link to transmit the maximum amount of data from one point to another over a computer network or internet connection in a given amount of time -- usually one second.

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    WAN (wide area network)

    A wide area network (WAN) is a geographically distributed telecommunications network that interconnects multiple local area networks (LANs).

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    ISDN (Integrated Services Digital Network)

    ISDN (Integrated Services Digital Network) is a set of CCITT/ITU standards for digital transmission over ordinary telephone copper wire, as well as over other media.

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