MEXICO CITY (WiMAX Day). The Mexican telecoms group Telmex posted a profit of US$ 803 million for the first quarter of 2007, the company reported last week. The majority of this profit came from revenue derived from its fixed-line and ADSL services, 72% of which is in Mexico. However, Telmex CFO Adolfo Cerezo said in a conference call that future revenue growth will be driven by triple play services and WiMAX. He noted that Telmex is already building WiMAX networks in Chile, Argentina and Peru, where it owns 3.5 GHz spectrum. The WiMAX service in Chile already is adding some 200 corporate clients each day, Cerezo said.