2 U.S.C. § 6315
Telecommunications services for Senators; payment of costs out of contingent fund
The Sergeant at Arms and Doorkeeper of the Senate shall furnish each Senator local and long-distance telecommunications services in Washington, District of Columbia, and in such Senator’s State in accordance with regulations prescribed by the Senate Committee on Rules and Administration; and the costs of such service shall be paid out of the contingent fund of the Senate from moneys made available to him for that purpose.
( Pub. L. 98–181, title I, § 1205(a) , Nov. 30, 1983 , 97 Stat. 1290 ; Pub. L. 99–65, § 1(b) , July 12, 1985 , 99 Stat. 163 ; Pub. L. 99–439 , Oct. 2, 1986 , 100 Stat. 1085 .)