Propuesta de integración de soluciones empresariales VoIP con software libre.

Abstract

To carry out the proposed integration of VOIP BUSINESS SOLUTIONS WITH FREE SOFTWARE conducted a preliminary study of the el astix voip in cisco and to integrate them working together and sharing services, through setting up a sip trunk. The experimental methodology is, I did a test environment with three scenarios, was installed and configured a router Cme 3.3 in 2811 and elast ix 2.2 on a PC. Already in the test environment is able to make calls to internal telephone exchanges or Elastix Call Manager Express and among them, testing the interoperability of calls and demonstrating a full duplex communication between technologies. Cisco equipment was used: a router 2811, two 2960 switch, cisco 7912 ip three telephones and a laptop PC AMD Athlon X2 QL - 66 Dual core with 2.20 GHz and 4 Gb Ram, and 3 xlite softphone version 4.0. As an analysis tool was used network protocol analyzer wir eshark version 1.6.5 The results obtained in the investigation determined that the architecture used by call centers for voip communication is transparent to the user because of the connection average time calls, since they range from 6 to 7 ms. The scala bility of Elastix, is up to 500 extensions voip, CME supports 180 while Elastix and CME boards support 680, covering the requirements of growth in 10 years to small, medium and large. The degree of coexistence or integration is measured according to the op eration of two Elastix PBX CME and sharing 50% of deployed services. Clarity of calls by subjective evaluation methodology MOS (Mean Opinion Score), determined that the audio quality on phone calls is excellent, corresponding to 92%, indicating user satisf action voip phone service. We conclude that the present system crashes or failures for maintenance services. For both cases the availability improvement when performed in shared environments CME - Elastix working each technology separately. When the voip service attack is stopped by software, no improvement in availability, as plants are recovered in the same time working alone or together. We recommend using the statistical analysis for testing the hypothesis, the method used in this study is chi square, obtaining a value of X ^ 2 303.37, which is much higher than the distribution table is 7.815 . For what value of x squared is in the rejection of the null hypothesis, accepting the research hypothesis.