Abstract
Many new technologies are coming on the market to optimize enterprise's
operations and to make easier people's life. One of the technology that most have
been evolving is the Telecommunications. There is a revolution on the telephone
system used today, which bases were created more than 100 years ago. The
present switched circuit network is being gradually substituted for the packet
switched network, which originally was used only for data traffic. This change favors
all, because it reduces costs and adds new features to the public telephony system,
but it needs attention to the many challenges this new technology brings. Among
these, the challenge to enforce at least the same security that exists on the present
public telephony system. This article discusses the applicability of information
security on the Voice over IP system using the SIP protocol.
Keywords: VoIP. Information Security. SIP.