(a) Installation and use. — Upon the request of an investigative or law-enforcement officer authorized to install and use a pen register under this chapter, a provider of wire or electronic communication service, landlord, custodian or other person shall furnish the investigative or law-enforcement officer with all information, facilities and technical assistance necessary to accomplish the installation of the pen register unobtrusively and with a minimum of interference with the services that the person ordered by the court accords the party with respect to whom the installation and use is to take place, if such assistance is directed by a court order under § 2433 of this title.
(b) Receipt of results. — Upon the request of an officer of law-enforcement agency authorized to receive the results of a trap and trace device under this chapter, a provider of a wire or electronic communication service, landlord, custodian or other person shall install the device on the appropriate line and shall furnish the investigative or law-enforcement officer all additional information, facilities and technical assistance including installation and operation of the device unobtrusively and with a minimum of interference with the services that the person ordered by the court accords the party with respect to whom the installation and use is to take place, if the installation and assistance is directed by a court order under § 2433 of this title. Unless otherwise ordered by the court, the results of the trap and trace device shall be furnished to the officer of a law-enforcement agency, designated in the court order, at reasonable intervals during regular business hours for the duration of the order.
(c) Compensation. — A provider of a wire or electronic communication service, landlord, custodian or other person who furnishes facilities or technical assistance under this section shall be compensated for reasonable expenses incurred in providing the facilities and assistance.
(d) Causes of action. — Nothing in this chapter may be construed as creating a cause of action against any provider of a wire or electronic communication service, its officers, employees, agents or other specified persons for providing information, facilities or assistance in accordance with the terms of a court order under § 2430, § 2431, § 2432 or § 2433 of this title.
(e) Defenses. — A good faith reliance on a court order, a legislative authorization or a statutory authorization is a complete defense against any civil or criminal action brought under § 2430, § 2431, § 2432 or § 2433 of this title or under any other law.