GSM-IP: A VoIP service for mobile networks

Ai Chun Pang, Yi-Bing Lin*, Ming-Feng Chang

*Corresponding author for this work

Research output: Contribution to journalArticle


Based on media gateway control protocol (MGCP), this paper describes GSM-IP, a voice over IP service for GSM mobile network. With the signaling protocol translation mechanism provided by the MGCP signaling gateway, we demonstrate how to interwork the MGCP elements with the home location register, visitor location register and mobile switching center in the GSM network. Then we present the message flows for GSM-IP registration, call origination, call delivery, call release and inter-system handoff procedures. We show the feasibility of integrating GSM with the MGCP-based VoIP network without modifying the GSM network. Furthermore, our approach does not introduce new protocol primitives to MGCP.

Original languageEnglish
Pages (from-to)283-298
Number of pages16
JournalWireless Communications and Mobile Computing
Issue number3
StatePublished - 1 Jul 2001


  • GSM
  • MGCP
  • Media gateway
  • Media gateway controller
  • Signaling gateway
  • Voice over IP

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