Proposal of a SIP-Based Method to Supervise Free Roaming Calls

Conference paper
Part of the Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering book series (LNICST, volume 275)


This paper proposes an optimised method to supervise free roaming calls. Since November 28th, 2016, West African countries and members of the Economic Community of West African States (ECOWAS) have decided to ban roaming charges among mobile phone users in these countries. Its implementation however poses a problem of performance costs of their visibility for certain actors such as regulatory authorities (R.A.). To improve this matter we proposed to set up a SIP proxy (Session Initiation Protocol) at the regulatory authorities in order to recover only the signaling of received calls in roaming. The SIP proxy is implemented by Kamailio. Compared to the literature, this article brings a new method of supervision by controlling and following the evolution of calls received in roaming. The results obtained have produced positive effects as only concerned calls will be supervised through the proxy. The proposed solution will facilitate regulators to perform their duties as taxing operators and resolving conflicts between them. It will allow end-users to have visibility into their calls.


Free roaming Signalization protocol SIP Supervision system Kamailio 


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Copyright information

© ICST Institute for Computer Sciences, Social Informatics and Telecommunications Engineering 2019

Authors and Affiliations

  1. 1.LIRT Laboratory, Higher Polytechnic SchoolUniversity of DakarDakarSenegal

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