Telefónica, Portugal Telecom to overlay GSM on CDMA networks in Brazil By Reily Gregson June 6, 2002 Archived ArticlesCarriers FacebookTwitterLinkedin S FacebookTwitterLinkedin Previous articleInet wins Philippine contractNext articleCTIA show moves up in trade show ranking AnatelCarriersCDMAGSMAHandsetsoperator ABOUT AUTHOR Reily Gregson RELATED POSTS AI-Machine-Learning How AI agents are powering the next wave of telecom operations (Reader Forum) Val Vaduva, Enghouse Networks and Jesse Lynch, Ocient - August 13, 2025 AI Infrastructure AI boom challenges CSP network readiness — Report Catherine Sbeglia Nin - August 12, 2025 5G GSMA: 5G connections in APAC set to hit 50% by 2030 Juan Pedro Tomás - July 24, 2025