1. Likelihood indicators
Indicators are tools to monitor whether the condition has become to problem or not. For understanding, condition and problem should be clearly differentiated. Condition is classified as any incidences but it is not come to an attention of policy makers. For example, an occurrence of AIDs in almost 30 years ago with few people affected to that disease is condition because it is not important point in the past. Now, that is considered as an international epidemic disease which no effective treatment so AIDs at this stage is considered as a problem because of increasing attention from its harmful by public or maybe policy makers(Gerston, 2008, p.36).In this study,the most possible indicators affecting to the mobile roaming rate control agenda setting is lower mobile roaming price of other countries. Table 1 shows that mobile phone registered in Malaysia calling to Brunei Darussalam was roaming charged 5 bath/min. In contrast, there will be 85 baht/min if using Thailand registered mobile phone calling to Brunei Darussalam. As a result, there is a big gap in mobile roaming rate even we are members in ASEAN community whose ideology is one vision one identity one community but why mobile roaming is not the same unlike imported tax rate.