Presented by: Muhammad Yeasir Arafat
Today, the session initiation protocol (SIP) is the predominant protocol for IP Telephony Signalling. The intention of this paper is to present an overview of IP Telephony security issues - both current and future – focusing on SIP. We start by presenting some fundamental differences between IP Telephony and the public switched telephone network (PSTN). We then look at specific problems for SIP signalling that arise from these differences. We summarize current activities regarding SIP security, including recent developments in the research community and standardization efforts within the IETF. Finally, the paper gives an outlook on the security issues of IP Telephony.
Download paper at: http://elx.ec/ssiipt