Posted on 15 August 2012. Tags: Jitter, MOS, PESQ, QoS
As Voice over Internet Protocol (VoIP) technology matures, companies are increasingly adopting it to cut costs, improve efficiency and enhance customer service. Using the Internet as an existing network for integrating data and telecom systems through intelligent VoIP, a range of benefits results: lower long distance costs, cost cuts in cabling processes and more flexible telephony management. However, as voice over IP services grow in popularity, major threats arise: this rapid growth leads to traffic congestion, security is jeopardized and the poor quality of calls affects communication.
The objective of this article is to present all the elements that can affect voice quality in a VoIP network and to provide methods for solving them. A detailed analysis to minimize the impact of implementation of QoS will be made, and at the end solutions to management strategies will be proposed.
Qos and Voice Over IP (263.3 KiB, 2,840 hits)
Posted in Information Technology, Volume II, Issue no. 4
Posted on 15 June 2012. Tags: H.323, Q.931, VoIP, VRRP
This article focuses on existing technologies in telecommunications but also on a comparative analysis of VoIP protocols. There will also be listed ways to extend networks and processes that contribute to the steady operation of the network as a set SLA with the support of a large number of simultaneous connections
VoIP Protocols (265.1 KiB, 2,647 hits)
Posted in Information Technology, Volume II, Issue no. 3
Posted on 15 April 2012. Tags: ARP, DoS, SIP, VoIP
VoIP relies on packet switching, similar to the way that e-mails are sent over the Internet. The technology breaks down a voice call into bite-size information packets. Instead of keeping the switch open all the time, the information is sent and received as needed, allowing excess line capacity to be used to carry other data. When the voice data arrives at its destination, it’s reassembled into a voice call. As voice over IP services grow in popularity, the potential for viruses, worms and other security threats aimed at the technology also will grow. The current paper’s purpose is presenting several security solutions and applying them to integrated systems at an economical and social level.
Security in VoIP (688.5 KiB, 2,700 hits)
Posted in Information Technology, Volume II, Issue no. 2
