Office Tchadien de Régulation des Télécommunications (OTRT). OTRT is Chad’s certification for wired and wireless communications. In order to import and use communication devices such as telephones, portable terminals and walkie-talkies used in Chad must be approved by the Chad Communications Regulatory Authority. The Chad telecommunications equipment approval body is OTRT (Office Tchadien de Régulation des Télécommunications). Target Products: Communication devices such as telephones, portable terminals, and walkie-talkies