EXHIBIT A

JOINT FILING UNDERTAKING

The undersigned, being authorized thereunto, hereby execute this agreement as an exhibit to this Schedule 13G to evidence the agreement of the below-named parties, in accordance with rules promulgated pursuant to the Securities Exchange Act of 1934, to file this Schedule, as it may be amended, jointly on behalf of each of such parties.

Dated: January 20, 2022
	TOPLINE CAPITAL MANAGEMENT, LLC
	By:	/s/ Collin McBirney
		Collin McBirney
		Managing Member
	TOPLINE CAPITAL PARTNERS, LP
	By: Topline Capital Management, LLC, its general partner
	By:	/s/ Collin McBirney
		Collin McBirney
		Managing Member
	COLLIN MCBIRNEY
	/s/ Collin McBirney