Asterisk: A converged tdm and packet-based communications system
- Authors: Penton, J , Terzoli, Alfredo
- Date: 2003
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/427547 , vital:72446 , https://citeseerx.ist.psu.edu/document?repid=rep1andtype=pdfanddoi=70080710a6f96bf1c071be14a8b21c17ff8cbc4d
- Description: Converged TDM and packet-based communications systems are a popular topic in computer science and telecommunications arenas. This paper discusses a system called Asterisk that is an open source hybrid TDM and packet voice platform. Asterisk is designed to interface any piece of telephony hardware or software with any telephony application. This makes Asterisk a powerful component that can be easily used in NGN softswitches, conferencing servers and Private Branch eXchanges (PBX). Asterisk has been deployed in the Rhodes University Computer Science Department’s VoIP environment and integrated with our existing H. 323 and SIP packet-based networks. This paper discusses the de-ployment of Asterisk, its interworking with our H. 323 and SIP networks and the functionality it offers in terms of a converged TDM and packet-based communications system.
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- Date Issued: 2003
CANS: Customizable Alarm Notification System, an H. 323 Signalling Service
- Authors: Penton, J , Terzoli, Alfredo
- Date: 2002
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/427562 , vital:72447 , https://www.cs.ru.ac.za/research/g97p5142/Docs/CANSSATNAC2002.pdf
- Description: H. 323 is a standardized signalling protocol for Voice over IP (VoIP) networks, which defines the terminal equipment and services that ena-ble real-time multimedia (data, voice, and video) communication over packetbased networks. One of the major advantages of carrying voice over Computer Networks, as opposed to the traditional SCN, is the pos-sibility of creating a wealth of services and integrating them into the network with minimal time and cost. Among these services, exists a subset that may need to interact at the signalling layer and H. 323 (ver-sion 4) provides mechanisms for this. This paper focuses on an appli-cation that was developed to explore and demonstrate H. 323’s signal-ling service creation and extension mechanisms.
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- Date Issued: 2002