True Move has been given another week by the National Broadcasting and Telecommunications Commission (NBTC) to transfer full management of its third-generation network operation centre to CAT Telecom under the latter's 3G network contracts.
Failing that, the watchdog will send a letter warning the country's third-largest mobile operator to stop marketing its 3G services on the 850-megahertz spectrum.
If True continues to ignore the command, the NBTC could even order it to cease operations.True had been ordered to transfer management to the state telecom enterprise by mid-April.
The NBTC last June ordered True and CAT to amend six items in their 3G network contracts, saying they violated Section 46 of the Frequency Allocation Act requiring licence holders and spectrum owners including CAT to manage spectrum rights on their own.
Secretary-general Takorn Tantasit said the NBTC will next week begin a serious examination of True Move H's 3G operations to see if CAT is using the 850-MHz spectrum with its own equipment and has full management control of the centre.