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Revenue Recognition
12 Months Ended
Sep. 30, 2020
Revenue from Contract with Customer [Abstract]  
Revenue Recognition Revenue Recognition
The Company’s principal sales are from Wireless services, sales of Telco equipment and Telco recycled equipment, primarily in the United States. Sales to international customers in Central and South America totaled approximately $1.9 million and $2.4 million in the years ended September 30, 2020 and 2019, respectively.
The Company’s customers include wireless carriers, wireless equipment providers, multiple system operators, resellers and direct sales to end-user customers. Sales to the Company’s largest customer totaled approximately 14% of consolidated sales.
Sales by type were as follows, in thousands:
 Years Ended September 30,
 20202019
Wireless services sales$21,354 $22,919 
Equipment sales:
Telco27,109 29,391 
Inter-segment(25)(55)
Telco repair sales68 43 
Telco recycle sales1,676 2,820 
Total sales$50,182 $55,118 
At September 30, 2020 contract assets were $0.6 million and contract liabilities were $0.1 million. There were $2.7 million in contract assets at September 30, 2019, and $0.1 million contract liabilities at September 30, 2019. During the year ended September 30, 2020, the Company recognized $0.1 million of amounts classified as deferred revenue on our consolidated balance sheet at September 30, 2019.