A New Wireless VoIP Signaling Device Supporting SIP and H.323 ProtocolsReport as inadecuate

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Journal of Computer Networks and CommunicationsVolume 2014 2014, Article ID 605274, 7 pages

Research Article

Faculty of Sciences and Techniques, Hassan 2nd University Mohammedia-Casablanca, Casablanca, Morocco

National School of Applied Sciences, Hassan 1st University, Khouribga, Morocco

Received 19 March 2014; Accepted 25 April 2014; Published 2 July 2014

Academic Editor: Tzonelih Hwang

Copyright © 2014 Salma Rattal et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Nowadays, VoIP is a technology with a great demand and wireless networks are increasingly deployed. Each of these has its own technology constraints. For VoIP, it is very important to take into consideration the need to provide a high quality service according to well-defined standard transmission jitter, end-to-end delay, MOS, and packet loss. However, wireless networks IEEE 802.11 are based on radio which undergoes a number of technical constraints to achieve theoretical transmission rates; among these constraints the number of users of the networks, the distance between the client and the access, and the amount of data transmitted point are included. In this term, a study is made by simulating wireless network in OPNET Modeler with a fairly large number of VoIPs 15 users whose signaling is handled via a new node that was created specifically to manage the signaling tasks under SIP and H.323 in order to minimize the number of nodes in the network and avoid the congestion. In this paper, two scenarios are compared; the first contains a number of VoIP users with SIP and H.323 signaling handled by the new created device; the second scenario is similar to the first except that the distance between the stations is remarkably lower.

Author: Salma Rattal, Abdelmajid Badri, and Mohammed Moughit

Source: https://www.hindawi.com/


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