During continued substantial compliance with the terms of this article by the owner of any telephone exchange, the charge levied hereby shall be and continue to be in lieu of all concessions, charges, excise, franchise, license, privilege, and permit fees or taxes of assessments, except ad valorem taxes. However, it is not intended hereby to extinguish or abrogate any existing arrangement whereby the city is permitted to use underground conduits, duct spaces, or pole contracts of the company for the fire alarm and police call system of the city.
(Prior Code, § 20-72)