• Title, Summary, Keyword: IP-PBX

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IP-PBX System of RasPBX-Based (RasPBX 기반의 IP-PBX 시스템)

  • Jeong, Dae-Jin;Song, Hyun-Ok;Jung, Hoe-kyung
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.19 no.5
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    • pp.1131-1136
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    • 2015
  • VoIP and IP Telephony telephony technology development is a growing by easy to using IP-PBX by using phone from using existing lines rather than the internet. IP-PBX do not use the phone line from phone work for many companies and institutions of management costs reduce as provides similar to regular phone line quality. But IP-PBX to introduce for need to be the initial cost on is should buy for expensive hardware equipment or commercial software. In this paper, suggest way to introduce IP-PBX do not buy expensive hardware equipment or commercial software. Suggest IP-PBX on designed and implement for IP-PBX server using Raspberry Pi and Asterisk. And verification treatise on the suitability of conducted by voice calls based on IP-PBX between PC and a Smartphone

Study on improvement of Performance of Call of IP PBX embeded using the Cashing Method (캐싱을 이용한 임베디드 IP PBX의 통화지연 개선에 관한 연구)

  • Kim, Sam-Taek
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.8 no.6
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    • pp.21-28
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    • 2008
  • In this paper, we proposed an algorithm that reduces call setup time between the IP PBXs installed in the main office and several branch offices. In the IP PBXs installed in branch offices, we prepare some internal memory spaces, and they keep the frequently used extension numbers and the corresponding IP PBX's addresses. In order to call an extension number registered to the other remote IP PBX from an extension number registered to the local IP PBX, the local PBX searches for the destined extension from its internal memory first. If the extension is found, then the local PBX uses its corresponding IP PBX address stored along with the extension, instead of making a query to the main office's IP PBX. By this technique, we could shorten the average call setup time and verified it by an experiment.

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Development of the Integrated Multimedia IP-PBX System (차세대 멀티미디어 음성보안 IP-PBX 시스템 개발)

  • Kim, Sam-Taek
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.11 no.5
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    • pp.95-100
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    • 2011
  • The next generation IP-PBX system are demanding multimedia facility to carry out UC(Unified Communication) and voice security also. Therefore, in this paper, we have developed the integrated solution of IP-PBX for the voice security by adopting VPN IPsec based on SIP using tunnel method in transmitting voice data to prevent eavesdrop of voice data and have shared between communication system based on PC and PSTN terminals. In particular, We have developed a video conference, private switching, distributed processing and measured telephone conversation quality. This IP-PBX that is connected Soft-phone provide various optional services.

IP PBX의 선두주자, 뉴온시스

  • Korean Associaton of Information & Telecommunication
    • 정보화사회
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    • pp.34-35
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    • 2005
  • 기업 통신망을 새로 구축하거나 증설해야 하는 기업들이 속속 IP 네트워크를 기반으로 하는 IP 텔레포니 시스템을 구축하고 있다. 전통적인 TDM 기반의 PBX를 쓰던 업체들도 ALL IP, 또는 기존 교환기에 IP 게이트웨이를 연결해 인터넷 전화 환경을 구현하고 있다. 이러한 IP PBX 시장은 매년 45% 이상 성장해 2008년에는 1,875억원에 달할 것으로 전망된다. 뉴온시스는 이러한 IP PBX 분야에서 우수한 기술력과 노하우를 가지고 있는 전문기업이다.

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Development Method and Design of B-ISDN Protocol embedded IP-PBX System for Multimedia Communication (B-ISDN프로토콜 내장의 멀티미디어통신용 IP-PBX 시스템의 개발방법 및 설계)

  • Choi Jae-Won
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.10 no.9
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    • pp.1700-1709
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    • 2006
  • In this raper we researched on the development methods and design of the B-ISDN protocol embedded IP-PBX System with the computers interconnected by the Internet for the previous telephone exchange and communication. We designed the structure of the user terminal and exchange sewer of the IP-PBX System, defined message and data structure for call control, and designed call control state transition and call control message flows for user's communication. And we researched on the message flows for supplementary services and the call control for multiple calls.

Implementation and Performance Evaluation of B-ISDN Protocol embedded IP-PBX System for Multimedia Communication (B-ISDN 프로토콜 내장의 멀티미디어통신용 IP-PBX 시스템의 구현 및 성능평가)

  • Kwon, Jung-Jang
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.11 no.7
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    • pp.1296-1304
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    • 2007
  • In this paper we researched on the implementation of the B-ISDN protocol embedded IP-PBX System with the computers interconnected by the Internet for the telephone exchange and multimedia communication. For the improvement on the structural problems of the previous PABX we designed the structure of the IP-PBX System, defined message and data structure for call control, designed call control state transition, and implemented call control message flows for user's communication.

Implementation of B-ISDN Protocol embedded IP-PBX System for Multimedia Communication (B-ISDN 프로토콜 내장의 멀티미디어통신용 IP-PBX 시스템 구현)

  • Choi, Jae-Won
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.11 no.12
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    • pp.2256-2264
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    • 2007
  • In this paper we researched on the implementation of the B-ISDN protocol embedded IP-PBX System with the computers interconnected by the Internet for the telephone exchange and multimedia communication. For the improvement on the structural problems of the previous PABX we designed the structure of the IP-PBX System, defined message and data structure for call control, designed call control state transition and implemented call control message flows for user's communication.

Study on Design of IP PBX of Distribute Base on SIP Protocol Stack (SIP프로토콜 스텍을 기반으로 하는 분산형 IP PBX 단말기 설계)

  • Yoo Seung-Sun;Yoo Gi-Hyoung;Lim Pyung-Jong;Hyun Chul-Ju;Kwak Hoon-Sung
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.31 no.4A
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    • pp.377-384
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    • 2006
  • According to fast VoIP technology development, more and more companies change voice network into IP based network among branch offices. IP PBX, which is deployed up to now, composed of IP phone and VoIP Gateway. Every telphone has replaced with If phone which support VoIP and VoIP gateway is installed in PBTN connection point to relay voice data. It can reduce the communication expense of International call, long distance call and call between a headquater and a trance because it uses internet line. In this paper, IP PBX is implemented that can distribute call using PBX network only usig personal terminal without Proxy Server. Depending on Role, terminal can be registered Master, Server and Client and it is verified in terms of performance and validation.

Implementation of Hybrid IP-PBX System offer to Voice Conference and Video Conference base on the SIP (SIP 기반 음성 및 화상회의용 하이브리드 IP-PBX 시스템 구현)

  • Kim, Sam-Taek
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.9 no.4
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    • pp.115-122
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    • 2009
  • These day, market demanded to a Video conference systems rapidly increases in our life for cut cost in communication. more and more it will be grow up. but the cost building to a Voice conference and a Video conference is very hight. therefore it is builded around the big company and the public office. so in this study, we have developed to hybrid IP-PBX which is able to a Voice conference and a Video conference with one system. the system developed has the merits to low-price for it's building in a small company. we make proof the performance through the test. with using the hybrid IP-PBX, we can sharply reduce to communication cost.

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A Study of Hacking Attack Analysis for IP-PBX (IP-PBX에 대한 해킹 공격 분석 연구)

  • Chun, Woo-Sung;Park, Dea-Woo;Yoon, Kyung-Bae
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • pp.273-276
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    • 2011
  • Voice over Internet Protocol(VoIP) compared to the traditional PSTN communications costs and because of the ease of use has been widespread use of VoIP. Broadband Convergence Network (BCN) as part of building with private Internet service provider since 2010, all government agencies are turning to the telephone network and VoIP. In this paper, we used the Internet on your phone in the IETF SIP-based IP-PBX is a hacking attack analysis studies. VoIP systems are built the same way as a test bed for IP-PBX hacking attacks and vulnerabilities by analyzing the results yielded. Proposes measures to improve security vulnerabilities to secure VoIP.

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