• Title, Summary, Keyword: PSTN

Search Result 276, Processing Time 0.037 seconds

A Study on Effect of Some Services on PSTN Usage

  • Cho, Jin-Nam;Yoo, Keuk-Ryoul
    • Journal of the Korean Data and Information Science Society
    • /
    • v.14 no.3
    • /
    • pp.605-614
    • /
    • 2003
  • This paper is to study the effects of some PSTN(public switched telephone network) related services on PSTN usages. We found a strong relationship between the number of subscribed services and PSTN usages. The more a user subscribes, the more he/she spends on PSTN. We also found a relationship between the number of subscriptions and whether to subscribe a new introduced service. A user with more subscriptions is likely to adpot a new introduced service.

  • PDF

Design and Implementation of Internetworking System between ATM and PSTN (ATM망과 PSTN망간 연동 시스템의 설계 및 구현)

  • Tak, Sung-Woo;Lee, Jung-Tae
    • The Transactions of the Korea Information Processing Society
    • /
    • v.5 no.11
    • /
    • pp.2930-2942
    • /
    • 1998
  • POTS(Plain Old Telephone Service) is the most popular telecommunication service and should be supported in the future BUSDN that is based on the ATM technology. Therefore, the interwoking system between ATM network and PSTN is needed, which provides telephone service between client of ATM network and subscriber of PSTN. In this paper, the interwoking system between ATM network and PSTN is designed and implemented. The interwoking system consists of PSTN I/F module, signaling processing module, voice sampling module, voice regeneration module, transmission module and ATM I/F module. The PSTN I/F module and ATM I/F module are implemented using the existing commercial H/W products. However, the other 4 modules are implemented for the WIN95 environments by software. The test environment is also implemented and the interworking system is operated without problems.

  • PDF

A Method for Efficient Signaling Interworking between PSTN/IP Networks (PSTN-IP Networks의 효율적 신호 연동 방안)

  • 고남영;이재완;황민호;서석철
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
    • /
    • /
    • pp.93-96
    • /
    • 2001
  • For interconnecting PSTN and IP Networks, We made a comparative analysis of signaling interworking and also studied SS7 Signaling process as a method for signaling interworking for using the establishment of PATN/IP network and seting up a phone call. As a methode of signalning interworking for linking an intelligent net-service between PSTN/IP Networks, we made researches of the merits and demerits about the access of INAP/SS7 using PSTN SCP and the call-routing of intelligent net-service using PSTM SSP in an IP network. We made a study of the protocol stack in IETF SIGTRAN as the realization for this

  • PDF

Study on the Architecture for Integrating VDIP with PSTN by ENUM and TRIP (ENUM과 TRIP을 이용한 PSTN과 VDIP 연동 구조 연구)

  • 이영수;안종석
    • Proceedings of the Korean Information Science Society Conference
    • /
    • /
    • pp.559-561
    • /
    • 2004
  • 인터넷과 PSTN망에서 제한적으로 제공하던 VDIP 서비스를 향후 1-2년 사이렌 국내.외에서 본격적으로 제공할 계획이다. 즉 현재 국부적으로만 제공하고 있는 PSTN-to-PSTN, IP-to-IP, 그리고 IP-to-PSTN 서비스를 확장하고 또한 PSTN-to-IP 서비스도 제공하려고 한다. 그러나 이러한 기존 서비스의 확장과 새로운 서비스를 제공하기 위해서는 두가지 중요한 문제인 서로 다른 VIP 사업자간의 연동, VDIP 사업자 망과 기존 PSTN 사업자 망과의 연동 문제를 해결해야 한다. 구체적으로, 이러한 문제는 두개의 이종 주소인 IP와 E.164 주소 사이의 전환 문제와 이종 네트워크들을 연동하는 다수의 게이트웨이들 간의 라우팅 문제로 세분할 수 있다. 본 논문에서는 이러한 문제를 해결하기 위해 제안된 방법, 즉 ENUM과 TRIP 프로토콜에 대해서 기술하고, 두가지 기술들의 문제점과 향후 VDIP 서비스를 제공하기 위한 제반 통신 구조를 서술한다.

  • PDF

A Study on the Evaluation of Equilibrium Price between PSTN and VoIP Service (PSTN과 VoIP 서비스 간의 균형가격 도출에 관한 연구)

  • Yoon, Sang-Hum;Jin, Xiang-Hua;Park, Jong-Heon;Park, Young-Jun;Juhn, Jae-Ho;Ha, Gui-Ryong
    • Journal of the Society of Korea Industrial and Systems Engineering
    • /
    • v.33 no.3
    • /
    • pp.137-145
    • /
    • 2010
  • The objective of this paper is to evaluate the equilibrium price between PSTN and VoIP telephony services in the case of non-linear utility function. Currently there are two types of wired phone services we are known PSTN (Public Switched Telephone Network) and VoIP (Voice over Internet Protocol). The PSTN telephony which provide high quality service and VoIP which provides relatively low quality service form a vertically differentiated oligopoly. Therefore, the evaluation of the equilibrium price between PSTN and VoIP services is very important to wired phone service providers. The equilibrium price depends on the state of the service cost function has been proved different value. This paper was evaluated each equilibrium price for the state of the linear cost function and non-linear cost function. Subsequently, this paper analyzed the demand of both services and the equilibrium profit which can maximize the profit of both service providers.

A Maintenance and Administration of the Interworking System between PSTN and PSDN (PSTN-PSDN 연동 장치의 유지보수 및 운용관리)

  • Chung, Tae-Soo;Park, Hee-Yong;Lee, Hyun-Tae;Park, Kyung-Sae
    • Proceedings of the KIEE Conference
    • /
    • /
    • pp.916-920
    • /
    • 1987
  • This paper describes the maintenance function and administration function in the IWS (InterWorking System between PSTN and PSDN) which Interconnects the PSTN and PSDN. The former function is for the stable operation of the IWS system, and the latter function is for the management of the subscriber, billing and statistics informations.

  • PDF

Object-oriented modeling based on the BCSM in PSTN/IP networks (PSTN/IP 통합망에서 BCSM에 기반한 객체 지향 모델링)

  • 이종혁
    • Proceedings of the Korea Society for Simulation Conference
    • /
    • /
    • pp.18-23
    • /
    • 1999
  • 본 논문에서는 음성 중심의 통신이 아닌 데이터 중심의 통신을 위한 네트워크인 PSTN/IP 통합망의 기본 호처리 프로세스를 객체 지향 관점에서 모델링을 하였다. 데이터 통신의 빠른 증가를 충족 시키기 위해, 기존의 하드웨어로 구성된 교환기를 범용 컴퓨터를 이용해 구현하고자 하는 PSTN/IP 통합망의 개발은 하드웨어 관점의 모델링이 아닌 소프트웨어 관점의 모델링을 기반으로 구축되어야 한다. 이를 위해 기존의 하드웨어 교환기 모델링에서 사용되던 State Model을 객체 지향 소프트웨어 개발을 위한 모델링의 표준인 UML(Unified Modeling Language) 표기법을 이용해 재모델링하였다.

  • PDF

The Method to providing data service with PSTN/VoIP Dual Phone (PSTN/VoIP 듀얼폰에서 데이터서비스 제공방법)

  • Hah, Yun-Kyung;U, Sang-U;Son, Jin-Su
    • 한국IT서비스학회:학술대회논문집
    • /
    • /
    • pp.147-150
    • /
    • 2010
  • 본 논문은 PSTN과 인터넷전화기능을 모두 갖춘 단말(일명 듀얼폰)에서 데이터서비스를 제공하는 방안을 소개한다. 듀얼폰은 음성단말로써 PSTN 또는 VoIP 통화를 모두 수용하고, 발신시에는 발신모드를 선택하여 제공함으로써 사용자가 저렴한 통신요금을 활용할 수 있는 장점이 있다. 그런데 본 단말은 인터넷브라우저를 탑재하지 않으므로 인터넷이 연결되어 있음에도 데이터서비스를 위한 웹 서버와 다이렉트 메시지교환이 용이하지 않다. 본 논문은 웹이용이 용이하지 않은 단말에서 데이터 서비스를 제공하는 방안을 소개한다.

  • PDF

Servie Integration via PSTN-PSDN Interworking System (PSTN-PSDN 연동장치 서비스)

  • Sin, Yeong-Seok;Jin, Byeong-Mun;Im, Ju-Hwan;Choe, Yang-Hui
    • ETRI Journal
    • /
    • v.10 no.2
    • /
    • pp.13-19
    • /
    • 1988
  • This paper describes on the interworking services. interworking issues and the design concepts in the Interworking System (IWS) between Pubilc Switched Telephone Network (PSTN) and Packet Switched Data Network (PSDN), which has been developed at the Electronics and Tedecommunications Research Institute (ETRI). As a gateway between PSTN and PSDN, IWS provides the interconnection between PSTN and PSDN. In addition to the provision of basic interconnection services (i.e. dial-in/dial-out services), IWS provides the Maintenance and Administration (M&A) services for system itself and the supplementary services such as the call barring, direct call and closed user group. The architecture of IWS is based on the multiprocessor system with single system bus. And a multiprocessor real time kernel is used to support the inter-board communication as well as the inter-process commmunications. Especially, the operation and maintenance functions of IWS are treated in detail.

  • PDF

Efficient ATM-PSTN per-trunk interworking (효율적인 ATM-PSTN trunk간의 연동 방안)

  • 이광희;이성창
    • Journal of the Korean Institute of Telematics and Electronics S
    • /
    • v.35S no.2
    • /
    • pp.40-49
    • /
    • 1998
  • In this paper, we propose an efficient per-Trunk interworking mechanism between PSTN and ATM network assuming the situation ATM network interworks with PSTN during the evolution period. The proposed mechanism improves the cell payload utilization by mapping only the active charnnels of PSTN frame into ATM cell payload. Also, we propose the frame recovery mechanism to guarantee the frame sequence integrity. The proposed mechanism is compared with other possible ones in terms of cell payload utilization, cell packetization delay. We present the implementation structure of the interworking unit. the correctness of the mechanism and the feasibility of the implementation are verifid through the CAD simulation.

  • PDF