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Revenue, Deferred Revenue And Prepaid Commissions - Additional Information and Disaggregation of Revenue (Details) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2022 USD ($) | Sep. 30, 2021 USD ($) | Sep. 30, 2022 USD ($) revenue_component | Sep. 30, 2021 USD ($)
Revenues from External Customers and Long-Lived Assets |  |  |  |
Total revenue | $ 33,744 | $ 35,851 | $ 101,279 | $ 107,610
Deferred revenue recognized from previous period |  |  | 20,800 |
United States |  |  |  |
Revenues from External Customers and Long-Lived Assets |  |  |  |
Total revenue | 32,827 | 34,758 | 98,152 | 104,730
International |  |  |  |
Revenues from External Customers and Long-Lived Assets |  |  |  |
Total revenue | 917 | 1,093 | $ 3,127 | 2,880
Wireless revenue |  |  |  |
Revenues from External Customers and Long-Lived Assets |  |  |  |
Revenue primary component | revenue_component |  |  | 2 |
Total revenue | 19,054 | 19,644 | $ 56,601 | 59,623
Paging revenue |  |  |  |
Revenues from External Customers and Long-Lived Assets |  |  |  |
Total revenue | 18,419 | 18,844 | 54,873 | 57,332
Product and other revenue |  |  |  |
Revenues from External Customers and Long-Lived Assets |  |  |  |
Total revenue | 635 | 800 | $ 1,728 | 2,291
Software revenue |  |  |  |
Revenues from External Customers and Long-Lived Assets |  |  |  |
Revenue primary component | revenue_component |  |  | 2 |
Total revenue | 14,690 | 16,207 | $ 44,678 | 47,987
License |  |  |  |
Revenues from External Customers and Long-Lived Assets |  |  |  |
Total revenue | 2,147 | 1,807 | 5,933 | 4,267
Professional services |  |  |  |
Revenues from External Customers and Long-Lived Assets |  |  |  |
Total revenue | 2,835 | 4,159 | 9,502 | 13,378
Hardware |  |  |  |
Revenues from External Customers and Long-Lived Assets |  |  |  |
Total revenue | 530 | 596 | 1,626 | 1,694
Operations revenue |  |  |  |
Revenues from External Customers and Long-Lived Assets |  |  |  |
Total revenue | 5,512 | 6,562 | 17,061 | 19,339
Maintenance |  |  |  |
Revenues from External Customers and Long-Lived Assets |  |  |  |
Total revenue | $ 9,178 | $ 9,645 | $ 27,617 | $ 28,648

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