100. FOR USE OF SUBSCRIBER Telephone service, other than "public" and "semi-public" service, is furnished for the use of the subscriber, his family and persons residing in his home or his employees or representatives, except as service may be extended to "joint users".105. FLAT RATE AND MESSAGE RATE SERVICE Flat rate and message rate services shall not be installed on premises of a public or semi-public character in a location where the telephone would be accessible for use by the patrons of the subscriber or the public in general.110. PUBLIC USE OF PRIVATE PHONES If it is found that the subscriber is permitting public use of service furnished him for his private use, the company shall thereafter provide "public' or "semi-public" service in accordance with its regulations or tariffs, except where the subscriber consents to the instrumentalities being so located as to be inaccessible to the public or permits no further public use after the matter has been called to his attention. No charge will be made for the relocation of a telephone instrument under such circumstances.115. JOINT USER SERVICE If it is found that a subscriber is sharing the use of his business service with an individual or concern other than an employee member or officer of the subscriber's concern or of a "joint user", the company shall thereafter require the subscriber to take "joint user" service thereof, except where the subscriber permits no further joint use of the service after the matter has been called to his attention or where the "joint user" vacates the subscriber's premises or becomes a subscriber to business service in the same exchange.