- boic barring of outgoing international calls supplementary service
- 禁止: prohibit; ban; forbid
- 国际: international; between natio ...
- 呼出: exhalation; expiration; call ...
- 禁止国际出局呼叫: barring of outgoing international calls
- 闭锁所有国际呼出业务: barring of all outgoing international calls
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