What are PBX CO lines?

Related questions

1. What is AHT formula?
2. What is the meaning of PABX and PBX in telecommunication?
3. How does a PABX work?
4. How do PBX phones work?
5. What is PRI in telecom?
6. How does Epabx system work?
7. What is a DID IN VoIP?
8. When was PBX invented?
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Tags

1. #company
2. #historically
3. #analog
4. #connects
5. #circuit
6. #business
7. #building
8. #copper
9. #equipment
10. #location
11. #telephone
12. #simple
13. #network
14. #switched
15. #houses
16. #public
17. #office
18. #voice
19. #central
20. #phone
21. #local
22. #switching