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MAJOR CUSTOMERS | 9 Months Ended
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Sep. 30, 2025
MAJOR CUSTOMERS |
MAJOR CUSTOMERS | ​ ​ (14) MAJOR CUSTOMERS The following customers contributed 10% or more of the Company’s revenue in the three and nine months ended September 30, 2025 and 2024: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three months ended | ​ | Nine months ended |  | ​
​ | ​ | September 30, | ​ | September 30, | ​ | September 30, | ​ | September 30, | ​ | ​
​ |  | 2025 |  | 2024 |  | 2025 |  | 2024 |  |
Verizon Communications Inc. | ​ | 18 | % | 15 | % | 18 | % | 13 | % | ​
Bharti Telecom Limited | ​ | 10 | % | * | ​ | * | ​ | * | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
* Less than 10% of total revenue | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ At September 30, 2025 and December 31, 2024, no customer accounted for 10% or more of the Company’s accounts receivable balance. The Company performs ongoing credit evaluations of its customers and generally does not require collateral on accounts receivable. The Company maintains an allowance for doubtful accounts and such losses have historically been within management’s expectations.

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