Title: Modelling and simulation of an analytical approach to handle real-time traffic in VoIP network

Authors: Sakshi Kaushal; Harish Kumar; Sarbjeet Singh; Shubhani Aggarwal; Jasleen Kaur; Sundarapandian Vaidyanathan

Addresses: University Institute of Engineering and Technology, Panjab University, Chandigarh, India ' University Institute of Engineering and Technology, Panjab University, Chandigarh, India ' University Institute of Engineering and Technology, Panjab University, Chandigarh, India ' University Institute of Engineering and Technology, Panjab University, Chandigarh, India ' University Institute of Engineering and Technology, Panjab University, Chandigarh, India ' University Institute of Engineering and Technology, Panjab University, Chandigarh, India

Abstract: In recent years, internet protocol (IP) has become a good choice over public switched telephone network (PSTN). VoIP implementation uses hard IP phones, soft IP phones and uses Softswitch for call signalling. The Erlang B model is used to determine number of trunks in circuit switched network and found traffic intensity and grade of service (GoS). This paper utilises an extension of Erlang B model for traffic engineering VoIP, i.e., extended Erlang B model. The main purpose for extended Erlang B is that it has better efficiency to handle the percentage of blocked calls by choosing a threshold value (∝). We propose a new measurement scheme based on extended Erlang B model using FreeSWITCH and simulated and analysed VoIP traffic. We compare our version with the original definition of EB model and present further results from simulations. The proposed scheme is also analysed for other QoS parameters, i.e., jitter, end to end delay and MOS.

Keywords: voice over IP; VoIP; session initiation protocol; SIP; Softswitch; call admission control; CAC; traffic load measurement; Erlang B.

DOI: 10.1504/IJSPM.2018.090267

International Journal of Simulation and Process Modelling, 2018 Vol.13 No.1, pp.35 - 42

Received: 15 Aug 2016
Accepted: 21 Feb 2017
Published online: 07 Mar 2018 *

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