Phone intercom central PABX with extension

Phone intercom central PABX with extension 

Capacity:
1) Card Expandable Structure

2) From 8 to 16 CO lines
   From 16 to 240 Extensions

3) Has 8 ports in per CO line; 16 port in per extension card

Main Functions:

1. SLT compatible, plug and play
2. Call management software
3. Caller ID transferred
4. Auto Fax detect
5. Least cost routing
6. Personal account
7. IP code access automatically
8. Outgoing call class
9. Outside ( CO ) Line Duration Time Limit
10. Various Outside ( CO ) line access mode
11. Speed dialing
12. Outside caller call extension by one touch
13. Executive busy override
14. Hot line ( call operator by off-hook only)
15. Extension password
16. Busy transferred
17. Unconditional Transferred
18. Call Transferred to Secretary
19. Do Not Disturb(DND)
20. Day and Night service
21. Operator attendant
22. Auto attendant
23. Extension ring by turns
24. Party Conference ( between 2exts & 1C.O )
25. Party Conference ( among 3 extensions)
26. One touch call operator
27. Ringback on busy ( when Ext.becomes free)
28. Call picked up by non-ring extension
29. External music on hold socket
30. Monitor voice record
31. Remote program
32. Extension number assignable
33. Eight ringing extensions assignable
34. Broadcast
35. Twin routes 3 section OGM (DISA),total 60seconds
36. Self-extension number confirmation
37. Pulse and tone mode setting
38. Polarity Reverse Detection (for billing)
39. Support backup battery
40. Voice prompt for function setting
41. Card expandable structure