Telecompaper reports that plans from state-owned Thai operator TOT to invite companies to bid for an MVNO contract using its network have been sent back to “square one,” with its management board asking for all aspects of the potential tender to be reassessed. Citing local news reports, the board has also called for an investigation into a roaming deal which enables AIS to use the TOT network, which could also impact the MVNO plans. The investigation is expected to take 30 days.