100. OPERATING METHODS Suitable rules and instructions shall be adopted by each telephone utility and followed by telephone operators governing the phraseology and operating methods to be employed by operators on regular, special, and toll calls.105. TRAFFIC RULES Traffic rules so adopted by each telephone utility, including instructions and the methods to be used by the operators, shall be followed as closely as possible. The Commission may review the practice of any telephone utility with regard to the adopted rules and compliance therewith, and may make suggestions relative to changes in practice.110. INSTRUCTIONS TO OPERATORS1. Telephone operators shall be instructed to be courteous, considerate and efficient in the handling of all subscriber calls.2. All communications between subscribers of telephone utilities shall be considered as confidential in nature, and operators or employees shall not listen to any conversation between subscribers except when an operating necessity. Operators shall not repeat or divulge the nature of any local or long distance conversation, nor divulge any information inadvertently overheard.115. SUPERVISION All calls shall be carefully supervised by the operator and disconnects made promptly after supervisory signals are received by the operator.