Under what circumstances can't the hotel switchboard monitor the phone?

In any case, the hotel switchboard can't monitor the phone. Take photos, eavesdrop or spread others' privacy according to the relevant information inquired. If the circumstances are serious, according to Article 284th of the Criminal Law of People's Republic of China (PRC), the crime of illegally using special equipment for eavesdropping and stealing photos is committed. Whoever causes serious consequences shall be sentenced to fixed-term imprisonment of not more than two years, criminal detention or public surveillance.