How does Epabx system work?

Related questions

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4. How many types of Epabx are there?
5. What is AHT formula?
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Tags

1. #operates
2. #office
3. #private
4. #carrier
5. #exchange
6. #particular
7. #automatic
8. #businesses
9. #public
10. #telephone
11. #company
12. #serves
13. #general
14. #common
15. #business
16. #epabx
17. #opposed
18. #system
19. #branch
20. #electronic