Exhibit 99.1

Joint Filing Agreement

 In accordance with Rule 13d-1(k) promulgated under the Securities Exchange Act of 1934, as amended, each of the persons named below agrees to the joint filing of this Schedule 13D (including amendments thereto) with respect to the shares of Common Stock, $0.01 par value, of Zoom Telephonics, Inc., a Delaware corporation, and further agrees that this Joint Filing Agreement be filed with the Securities and Exchange Commission as an exhibit to such filing; provided, however, that no person shall be responsible for the completeness or accuracy of the information concerning the other persons making the filing unless such person knows or has reason to believe such information is inaccurate (as provided in Rule 13d-1(k)(1)(ii)). This Joint Filing Agreement may be executed in one or more counterparts, all of which together shall constitute one and the same instrument.

IN WITNESS WHEREOF, the persons named below have executed this Joint Filing Agreement as of the date set forth below.

Dated as of December 8, 2023

/s/ Jeremy P. Hitchcock

Jeremy P. Hitchcock

/s/ Elizabeth Cash Hitchcock

Elizabeth Cash Hitchcock

Orbit Group LLC
By:	/s/ Jeremy P. Hitchcock
Name:	Jeremy P. Hitchcock
Title:	Manager

Hitchcock Capital Partners, LLC
By:	Orbit Group LLC, its Manager
	By:	/s/ Jeremy P. Hitchcock
	Name:	Jeremy P. Hitchcock
	Title:	Manager

Zulu Holdings LLC
By:	Orbit Group LLC, its Manager
	By:	/s/ Jeremy P. Hitchcock
	Name:	Jeremy P. Hitchcock
	Title:	Manager
Slingshot Capital, LLC
By:	Orbit Group LLC, its Manager
	By:	/s/ Jeremy P. Hitchcock
	Name:	Jeremy P. Hitchcock