System Description
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| 1. 12 Slots for CO line Trunk Cards or Station Cards flexibly. |
| 2. Optional 4 CO or 8 CO lines, or 8 or 16 SLT Stations Card per card. |
| 3. Built-in RS232 Card Interface and Door Phone Interface. |
| 4. Basic Capacity: 0 CO, 0 Station. |
| 5. Line Polarity Reverse Detection. |
| 6. Built-in 2 Voice Service Cards interface. Each card supporting 2 channels, 60 seconds, upto 20 segments messages. It is a friendly Auto Attendant. |
| 7. Abundant Interfaces including Door Phone Stations Door Latch, Burger Alarm, Security System, Back-up Battery, External Paging/Loud Bell, External Music Source,etc. |
| 8. Expansion Cards including 4 Channels Trunk Unit, 8 Channels Trunk Unit, 8 Lines Key Station Card, 8 Lines Fully Hybrid Station Card, 8 Lines or 16 Lines SLT Station Card, 2 Channels Voice Service Card, and Multi Function Card, etc. |
| 9. Maximum Capacity: 20 CO, 104 or 192 Stations. |
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