Session Initiation Protocol
نویسنده
چکیده
Session Initiation Protocol (SIP) is a new and emerging protocol that is used to establish and release the connmsction between two end systems. It is used in preference to the older H323 protocol. Both protocols provide a similar set of services hut SIP is much simpler because it has less logical components. This paper describes the implementation of a VoIP applicationusing SIP as the handshaking protocol. The implementation of the SIP is performed with the aid of Libsip++ library from Columbia University. The audio signal is transmitted via the Microsoft’s windows API. The Vo IPsystem was created using Delphi 5.0. As the Lipsip++ was created using Microsoft’s C++ 6.0, some incompatibility problem arises. There will be a section discussing these problems and it’s solution. The VoIP system consists of a SIP server and two user gent. The SIP server is linked to a HTTP sene r to facilitate the update of user configuration via Internet. This paper will also introduce a new function called chatboard that will facilitate users with speech handicap.
منابع مشابه
Security testing of session initiation protocol implementations
The mechanisms which enable the vast majority of computer attacks are based on design and programming errors in networked applications. The growing use of voice over IP (VOIP) phone technology makes these phone applications potential targets. We present a tool to perform security testing of VOIP applications to identify security vulnerabilities which can be exploited by an attacker. Session Ini...
متن کاملThe Session Initiation Protocol (SIP) and Session Description Protocol (SDP) Static Dictionary for Signaling Compression (SigComp)
The Session Initiation Protocol (SIP) is a text-based protocol for initiating and managing communication sessions. The protocol can be compressed by using Signaling Compression (SigComp). Similarly, the Session Description Protocol (SDP) is a text-based protocol intended for describing multimedia sessions for the purposes of session announcement, session invitation, and other forms of multimedi...
متن کاملSession Initiation Protocol (SIP) Usage of the Offer/Answer Model
The Session Initiation Protocol (SIP) utilizes the offer/answer model to establish and update multimedia sessions using the Session Description Protocol (SDP). The description of the offer/answer model in SIP is dispersed across multiple RFCs. This document summarizes all the current usages of the offer/answer model in SIP communication.
متن کاملAn improved authentication protocol for session initiation protocol using smart card
The authenticated key agreement protocol is an important security protocol for the session initiation protocol, which allows the and the server to authenticate each other and generate a shared session key for privacy, integrity, and non-repudiation in their communications. Recently, Zhang et al. proposed a new authenticated key agreement protocol for the session initiation protocol using smart ...
متن کاملA New Efficient Authentication Scheme for Session Initiation Protocol
Today, the efficiency and security of session initiation protocol is becoming more and more important. In 2005, Yang et al. proposed a secure authentication scheme for session initiation protocol. However, it is not suitable for the limited computation capacities of users such as smart cards or mobile units. To guarantee the quality of the growing communication services, we propose an efficient...
متن کاملSession Initiation Protocol (sip) Session Mobility Draft-shacham-sipping-session-mobility-05
Session mobility is the transfer of media of an ongoing communication session from one device to another. This document describes the basic approaches and shows the signaling and media flow examples for providing this service using the Session Initiation Protocol (SIP). Service discovery is essential to locate targets for session transfer Shacham, et al. Expires May 21, 2008 [Page 1] Internet-D...
متن کامل