VoIP Network Elements Attacks







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The most widely used competing standards for VoIP signaling are the International Telecommunication Union Standardization Sector's (ITU-T) H.323 and the Internet Engineering Task Force's (IETF) Session Initiation Protocol (SIP). Initially H.323 was the most popular protocol, though its popularity has decreased and some believe that SIP will become dominant. Until a truly dominant standard emerges, however, organizations moving to VoIP should probably consider both H.323 and SIP.

For this reason, in the next sections we will introduce both specifications, describing the equipment deployed in common VoIP architectures.

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