한국정보처리학회논문지 (The Transactions of the Korea Information Processing Society)
- 제6권10호
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- Pages.2740-2751
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- 1999
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- 1226-9190(pISSN)
음성 전화를 위한 Internet-ISDN 연동 게이트웨이 신호 프로토콜 검증
Signalling Protocol Validation of Internet-ISDN Interworking Gateway for Voice Telephony
초록
Critical to more widespread use of Internet telephony are the smooth interoperability with the existing telephone network and the improved quality of voice connections. Of these requirements, this interoperability comes through the use of Internet Telephony Gateway's which perform protocol translation between an IP network and the Public Switched Telephone Network. In this paper, we have focused on the necessity and possibility of interoperability, and furthermore derives the necessary requirements for interoperability between IP networks and PSTN. For this purpose, we have analyzed the signaling protocols for gateway system. Then, we have modelled the inter-working part using the Petri-Net model. Through reachability trees of the Petri-Net model, we have confirmed that interoperability is possible, and that characteristics of deadlock, liveness, and boundness are satisfied.
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