Conn. Gen. Stat. § 16-256j

All bills for telecommunications services, whether issued by a telecommunications company or by a billing service, shall (1) contain the name of each carrier providing service as well as a toll-free number for customer complaints for each such carrier printed clearly and conspicuously on the portion of the bill relating to each carrier; (2) clearly and conspicuously identify on the bill those charges for which nonpayment will not result in disconnection of basic, local service; and (3) only label a charge as a tax if such tax is directly assessed by the taxing entity on the customer through the telecommunications company, which tax shall appear as a separate charge on such bill.