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2016•Unpublished venueRequires access

Session Initiation Protocol

Hans W. Barz, Gregory A. Bassett

Open publisher page 5 citations

Abstract

This chapter focuses on the basic elements for a telephone system as used in company environments. Each telephone system needs to interoperate with the public-switched telephone network (PSTN). The session initiation protocol (SIP) was originally specified in 1999, and the latest version dates from 2004 as RFC 3261. It is a voice-over-IP (VoIP) standard. The chapter explains how conferences are established using SIP, and shows the implementation methods within the SIP event framework. SIP protocols have problems to pass through firewalls and need the mechanisms for a traversal. Next, the chapter provides an overview of the most common application interfaces (APIs) for SIP. Consequently, security and safety of the overall system are a concern. The chapter handles SIP and VoIP security solutions and takes a look at the safety as well. Finally, it talks about planning of a VoIP company telephone system.

About this research paper

What this paper is about

This chapter focuses on the basic elements for a telephone system as used in company environments. Each telephone system needs to interoperate with the public-switched telephone network (PSTN). The session initiation protocol (SIP) was originally specified in 1999, and the latest version dates from 2004 as RFC 3261. It is a voice-over-IP (VoIP) standard. The chapter explains how conferences are established using SIP, and shows the implementation methods within the SIP event framework. SIP protocols have problems to pass through firewalls and need the mechanisms for a traversal. Next, the chapter provides an overview of the most common application interfaces (APIs) for SIP. Consequently, security and safety of the overall system are a concern. The chapter handles SIP and VoIP security solutions and takes a look at the safety as well. Finally, it talks about planning of a VoIP company telephone system.

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OpenAlex reports 5 citations for this work. Citation counts describe recorded attention and do not establish research quality.

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Available abstract

This chapter focuses on the basic elements for a telephone system as used in company environments. Each telephone system needs to interoperate with the public-switched telephone network (PSTN). The session initiation protocol (SIP) was originally specified in 1999, and the latest version dates from 2004 as RFC 3261. It is a voice-over-IP (VoIP) standard. The chapter explains how conferences are established using SIP, and shows the implementation methods within the SIP event framework. SIP protocols have problems to pass through firewalls and need the mechanisms for a traversal. Next, the chapter provides an overview of the most common application interfaces (APIs) for SIP. Consequently, security and safety of the overall system are a concern. The chapter handles SIP and VoIP security solutions and takes a look at the safety as well. Finally, it talks about planning of a VoIP company telephone system.

Key concepts: Session Initiation Protocol, Voice over IP, SIP trunking, Session (web analytics), Public switched telephone network, Computer science, Telephony, Call control

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