65- 407 C.M.R. ch. 230, § 6
Customers, premises owners, or third parties hired by a customer or premises owner, may install a standard jack and plug or a network interface device at the demarcation point, provided that the jack and plug comply with Part 64, subpart F of the rules of the Federal Communications Commission and that the location complies with Section 3 of this rule. The jack and plug or network interface device shall be accessible to the customer. Customers shall not be permitted access to the protector.
A local exchange carrier may state in its terms and conditions that it has undertaken a program to install network interface devices or combined network interface-protector units that are weatherproofed or have special testing abilities or other features at demarcation points as provided in Section 3 and that are outside buildings or otherwise accessible to the carrier at convenient times. Local exchange carrier engaged in a program as described may provide in its terms and conditions that combination network interface-protector units must be installed by the local exchange carrier or that customers who install a network interface device that is not combined with a protector shall install a type approved by the carrier and in a location approved by the carrier. A local exchange carrier engaged in a program as described may also provide in its terms and conditions that in the event that both the carrier and the customer install devices that are capable of serving as the network interface device and as the demarcation point in accordance with Section 3, the carrier-installed network interface device shall be the demarcation point.
65- 407 C.M.R. ch. 230, § 6