Reducing international call costs for roamer to roamer calls

Yuan Kai Chen*, Yi-Bing Lin, Ren Huang Liou

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


Existing mobile telecom operators allow subscribers to receive mobile phone services when they roam in other countries. However, call setup to an international roaming subscriber is indirectly routed through the home network of the subscriber, which results in the usage of two expensive international telephone trunks. In this paper, we propose a plug-in roaming gateway to avoid the international trunk connections. Our solution is especially attractive when both call parties are roamers.

Original languageEnglish
Article number5535160
Pages (from-to)4131-4134
Number of pages4
JournalIEEE Transactions on Vehicular Technology
Issue number8
StatePublished - 1 Oct 2010


  • International roaming
  • mobile telecom service
  • mobility management
  • tromboning

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