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Security of VoIP phone systems comes up short

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Unlike circuit-switched telephone networks, VoIP is software based and introduces vulnerabilities like any other software package. Learn what the weaknesses are, and what to do about them.

Public Switched Telephone Network (PSTN) technology is one of the most secure and reliable technologies in existence. VoIP technology, its eventual replacement, has some very big shoes to fill. And, when it comes to digital security, VoIP appears to be coming up short.

Differences that affect security

Multiple standards: Unlike data traffic, VoIP currently has two standards, H.323 and Session Initiation Protocol (SIP), that are vying for the top spot (shades of Betamax versus VHS). Deciding which protocol to use is dependent on company needs. More importantly, it must be noted that each protocol requires a different security methodology.

Security devices affect Quality of Service (QoS): If VoIP traffic is expected to traverse the same perimeter security equipment as data traffic,...(continued)

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