How can a traveler, equipped with an EcoTrigger and having a subscriber account with Eco123 service, make low-cost international calls when traveling in anyone of the 173 countries where the EcoTrigger signaling service is available?
For ease of illustration and reference, we shall consider the following scenario involving the named individuals and country of visit: John, the traveler who is resident in Canada, is on a 2-day short visit to Mexico with ABC-Co where he has pre-scheduled business meetings with Carlos. John always has an EcoTrigger with him when he travels abroad. During a business meeting, John finds it necessary to call back to his head office in Canada to speak with Peter for some advice. John could but he would not want to use his mobile handset equipped with a SIM issued by Rogers (the Canadian GSM operator) as it would cost US$2.50 per minute for calling from Mexico to Canada using the roaming service. Also he could but he would not want to use ABC-Co’s facility to make the international call at ABC-Co’s expense. That’s because he has a much better way for making the call by making use of EcoTrigger supported by Eco123 service. He makes the call as follows: John first asks Carlos for his consent
