Mobile Number Portability

Yi-Bing Lin*, Imrich Chlamtac, Hsiao Cheng Yu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


Mobile number portability allows a mobile subscriber to switch operators without changing his/her phone number. This article describes and analyzes mobile number portability routing mechanisms and their implementation costs. We first describe the Signaling Relay Function (SRF)-based solution for call related and non-call related routing. Then we describe the Intelligent Network (IN)-based solution for call related routing. Cost recovery issues for number portability are discussed in this article from a technical perspective. We note that rules for cost recovery also depend on business and regulatory factors that vary from country to country.

Original languageEnglish
Pages (from-to)8-16
Number of pages9
JournalIEEE Network
Issue number5
StatePublished - 1 Sep 2003

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