Integración de Kamailio en la arquitectura de telefonía IP de una empresa
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Document typeBachelor thesis
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Over the last few years, the use of voice over IP (VoIP) technology to make calls over the Internet has become popular. VPN's (Virtual Private Networks) are used to connect offices or connect an user to a site. They establish a point-to-point connection through Internet that allows the user to call using VoIP technology. The current architecture presents several drawbacks as the incompatibility of the technology used in the VPN's (L2TAP, PPTP, OPENVPN...) with the service provider, the realization of operation and management (O&M) in several points of the network, the need of having double accounting (VPN and SIP) configurated in the user's device and the poor scalability they offer. After evaluating all the drawbacks in the current architecture model, we conclude that the best option is to implement a technological architecture based on open software and standards. In this project you will find the design proposal for a local operator which requires a solution and advice on the change from analog telephony to IP telephony. The project focuses on the proposed design, making the system scalable, redundant and reliable. Kamailio has been chosen for this implementation. It will eliminate the need to create VPNs (it will use TLS for signaling), allowing the system to be more scalable and simplifing the operation and maintenance processes. In addition, virtualization technology has been chosen to host telephony services. Virtualization will provide flexibility, agility in maintenance operations and a reduction in infrastructure costs. After carrying out the project, we conclude that Kamailio is a very powerful SIP router, capable of performing different functions, registering, authenticating, load balancing, modifying headers... without the CPU load being a problem despite the large number of SIP traffic to be managed.