Travel Smarter. Travel Greener. Every great journey starts with the right partners, and today, we are taking a major leap toward the future of travel. We are excited to announce that Eurotel has officially signed a Memorandum of Understanding (MOU) with Green GSM! Every great journey starts with the right partners, and today, we are taking a major leap toward the future of travel. We are excited to announce that Eurotel has officially signed a Memorandum of Understanding (MOU) with Green GSM!