The Group's principal activities are operating and providing services to Digital Global System Mobile (Digital GSM) mobile phone network through 900 MHz frequency under the concession agreements with TOT Corporation Public Company Limited. Other activities include operating 1800-MHz digital cellular phone service, importing and distributing mobile phones, accessories and telecommunication equipment, providing online data communication service via telephone line network both in Bangkok and upcountry as well as providing call center service and internet service. Products are GSM Advance, GSM 1800, One-2-Call, mobile LIFE.
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