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Segment Information and Sales to Significant Customers
12 Months Ended
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.