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Revenue, Deferred Revenue And Prepaid Commissions (Tables)
 9 Months Ended
Sep. 30, 2022
Revenue from Contract with Customer [Abstract]  
Schedule of Revenue
The following table presents our revenues disaggregated by revenue type:
For the Three Months Ended September 30,For the Nine Months Ended September 30,
(Dollars in thousands)2022202120222021
Revenue:
Paging revenue$18,419 $18,844 $54,873 $57,332 
Product and other revenue635 800 1,728 2,291 
Wireless revenue$19,054 $19,644 $56,601 $59,623 
License$2,147 $1,807 $5,933 $4,267 
Professional services2,835 4,159 9,502 13,378 
Hardware530 596 1,626 1,694 
Operations revenue5,512 6,562 17,061 19,339 
Maintenance9,178 9,645 27,617 28,648 
Software revenue$14,690 $16,207 $44,678 $47,987 
Total revenue$33,744 $35,851 $101,279 $107,610 
Revenue generated in the U.S. and internationally consisted of the following for the periods stated:
For the Three Months Ended September 30,For the Nine Months Ended September 30,
(Dollars in thousands)2022202120222021
United States$32,827 $34,758 $98,152 $104,730 
International917 1,093 3,127 2,880 
Total revenue$33,744 $35,851 $101,279 $107,610 
Schedule of Deferred Revenue Changes in the balance of total deferred revenue during the nine months ended September 30, 2022, are as follows:
(Dollars in thousands)December 31, 2021AdditionsRevenue RecognizedSeptember 30, 2022
Deferred Revenue$26,406 $44,099 $(44,035)$26,470 
Schedule of Deferred Commissions Changes in the balance of total prepaid commissions during the nine months ended September 30, 2022 are as follows:
(Dollars in thousands)December 31, 2021AdditionsCommissions RecognizedSeptember 30, 2022
Prepaid Commissions$1,821 $2,966 $(3,016)$1,771