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Revenue (Tables) | 9 Months Ended
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Sep. 30, 2021
Revenue From Contract With Customer [Abstract] |
Disaggregate of Revenue by Reportable Segment and Revenue Category | The following tables disaggregate revenue by reportable segment and revenue category:
|  | Three Months Ended |
|  | September 30, 2021 |  |  | September 30, 2020 |
(In thousands) |  | Network Solutions |  |  | Services & Support |  |  | Total |  |  | Network Solutions |  |  | Services & Support |  |  | Total |
Access & Aggregation |  | $ | 77,104 |  |  | $ | 12,069 |  |  | $ | 89,173 |  |  | $ | 71,919 |  |  | $ | 13,504 |  |  | $ | 85,423 |
Subscriber Solutions & Experience |  |  | 42,093 |  |  |  | 2,819 |  |  |  | 44,912 |  |  |  | 40,843 |  |  |  | 2,282 |  |  |  | 43,125 |
Traditional & Other Products |  |  | 1,570 |  |  |  | 2,426 |  |  |  | 3,996 |  |  |  | 2,467 |  |  |  | 2,128 |  |  |  | 4,595 |
Total |  | $ | 120,767 |  |  | $ | 17,314 |  |  | $ | 138,081 |  |  | $ | 115,229 |  |  | $ | 17,914 |  |  | $ | 133,143 |
|  | Nine Months Ended |
|  | September 30, 2021 |  |  | September 30, 2020 |
(In thousands) |  | Network Solutions |  |  | Services & Support |  |  | Total |  |  | Network Solutions |  |  | Services & Support |  |  | Total |
Access & Aggregation |  | $ | 215,464 |  |  | $ | 33,747 |  |  | $ | 249,211 |  |  | $ | 194,695 |  |  | $ | 39,470 |  |  | $ | 234,165 |
Subscriber Solutions & Experience |  |  | 139,459 |  |  |  | 7,832 |  |  |  | 147,291 |  |  |  | 118,907 |  |  |  | 6,790 |  |  |  | 125,697 |
Traditional & Other Products |  |  | 5,102 |  |  |  | 7,242 |  |  |  | 12,344 |  |  |  | 10,322 |  |  |  | 6,197 |  |  |  | 16,519 |
Total |  | $ | 360,025 |  |  | $ | 48,821 |  |  | $ | 408,846 |  |  | $ | 323,924 |  |  | $ | 52,457 |  |  | $ | 376,381 |
The table below presents revenue information by category:
|  | Three Months Ended |  |  | Nine Months Ended |
|  | September 30, |  |  | September 30, |
(In thousands) |  | 2021 |  |  | 2020 |  |  | 2021 |  |  | 2020 |
Access & Aggregation |  | $ | 89,173 |  |  | $ | 85,423 |  |  | $ | 249,211 |  |  | $ | 234,165 |
Subscriber Solutions & Experience |  |  | 44,912 |  |  |  | 43,125 |  |  |  | 147,291 |  |  |  | 125,697 |
Traditional & Other Products |  |  | 3,996 |  |  |  | 4,595 |  |  |  | 12,344 |  |  |  | 16,519 |
Total |  | $ | 138,081 |  |  | $ | 133,143 |  |  | $ | 408,846 |  |  | $ | 376,381 |
Information about Receivables, Contract Assets, and Unearned Revenue from Contracts with Customers | The following table provides information about receivables, contract assets and unearned revenue from contracts with customers:
|  | As of |  |  | As of |
(In thousands) |  | September 30, 2021 |  |  | December 31, 2020 |
Accounts receivable, net |  | $ | 124,146 |  |  | $ | 98,827 |
Contract assets(1) |  | $ | 999 |  |  | $ | 63 |
Unearned revenue |  | $ | 16,394 |  |  | $ | 14,092 |
Non-current unearned revenue |  | $ | 7,426 |  |  | $ | 6,888 |
(1) Included in other receivables on the Condensed Consolidated Balance Sheets.

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- Definition Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130551-203045 + Details
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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130545-203045 + Details
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