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Segment Information and Sales to Significant Customers | 12 Months Ended
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Sep. 30, 2019
Segment Reporting [Abstract] |
Segment Information and Sales to Significant Customers | Note 21 — Segment Information and Sales to Significant Customers The Company and its subsidiaries operate in one operating segment, providing software products and services for the communications, entertainment and media industry service providers. Geographic Information The following is a summary of revenue and long-lived assets by geographic area. Revenue is attributed to geographic region based on the location of the customers.
|  | Year Ended September 30, |
|  | 2019 |  |  | 2018 |  |  | 2017 |
Revenue |  |  |  |  |  |  |  |  |  |  |  |
North America (mainly United States) |  | $ | 2,582,719 |  |  | $ | 2,550,234 |  |  | $ | 2,546,290 |
Europe |  |  | 598,731 |  |  |  | 572,196 |  |  |  | 488,932 |
Rest of the world |  |  | 905,219 |  |  |  | 852,407 |  |  |  | 831,933 |
Total |  | $ | 4,086,669 |  |  | $ | 3,974,837 |  |  | $ | 3,867,155 |
|  | As of September 30, |
|  | 2019 |  |  | 2018 |
Long-lived Assets(1) |  |  |  |  |  |  |  |
Europe |  | $ | 206,086 |  |  | $ | 187,884 |
North America |  |  | 95,876 |  |  |  | 88,251 |
Rest of the world: |  |  |  |  |  |  |  |
Israel |  |  | 168,493 |  |  |  | 161,726 |
India |  |  | 36,546 |  |  |  | 37,239 |
Others |  |  | 18,313 |  |  |  | 21,485 |
Total |  | $ | 525,314 |  |  | $ | 496,585 |
(1) | Property and equipment, net.
Revenue by nature of activities
|  | Year Ended September 30, |
|  | 2019 |  |  | 2018 |  |  | 2017 |
Managed services arrangements |  | $ | 2,246,279 |  |  | $ | 2,051,589 |  |  | $ | 2,005,382 |
Others |  |  | 1,840,390 |  |  |  | 1,923,248 |  |  |  | 1,861,773 |
Total |  | $ | 4,086,669 |  |  | $ | 3,974,837 |  |  | $ | 3,867,155 |
Sales to Significant Customers The Company had one customer, AT&T, which accounted for at least ten percent of its total revenue in each of fiscal years 2019, 2018 and 2017. The percentage of revenue from this customer out of total revenue during fiscal years 2019, 2018 and 2017 was 23%, 27% and 33%, respectively.

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- Definition The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -URI http://asc.fasb.org/topic&trid=2134510 + Details
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