4. A 9-1-1 emergency centre must provide safety and protection measures against intrusion including(1) limiting, only to the persons authorized thereto, access to the premises used for processing emergency calls and those used for the equipment necessary for its operations; and
(2) holding a register of the times of entry and exit of suppliers and visitors who have access to the premises and ensure that they are accompanied or under constant supervision during their visit.
Despite the foregoing, if safety is not compromised, the 9-1-1 emergency centre may allow a supplier or a visitor to have access to the premises referred to in subparagraph 1 of the first paragraph without being accompanied or under constant supervision.