For purposes of imposing a tax or establishing a duty to collect and remit a tax under this Chapter, "substantial nexus" and "minimum contacts" shall be construed broadly in favor of the imposition, collection and/or remittance of the service user's tax to the fullest extent permitted by state and federal law, and as it may change from time to time by judicial interpretation or by statutory enactment. Any communication service (including VoIP) used by a person with a service address in the City, which service is capable of terminating a call to another person on the general telephone network, shall be subject to a rebuttable presumption that "substantial nexus/minimum contacts" exists for purposes of imposing a tax, or establishing a duty to collect and remit a tax, under this Chapter. A service supplier shall be deemed to have sufficient activity in the City for tax collection and remittance purposes if its activities include, but are not limited to, any of the following: maintains or has within the City, directly or through an agent or subsidiary, a place of business of any nature; solicits business in the City by employees, independent contractors, resellers, agents or other representatives; solicits business in the City on a continuous, regular, seasonal or systematic basis by means of advertising that is broadcast or relayed from a transmitter within the City or distributed from a location within the City; or advertises in newspapers or other periodicals printed and published within the City or through materials distributed in the City by means other than the United States mail.