Vertical Edge 120 Specifications Page 32

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OVERVIEW DX-120 Installation and Maintenance Manual
- 26 -
T1 Card (T1 Module) Details
The T1 Card (T1 Module) allows for expansion of the DX-120 system CO line interface to a capacity maximum of
24 digital CO line ports.
T1 Module
T1 Card (T1 Module) Details
Capacity: One (1) T1(1.544Mbps, 24channels) interface
Network interface mode T1-Interface
Network connector •RJ-45
LED indicator T1 Card has 9 LEDs on the PCB which indicate alarms of T1 trunk,
in-use status, and synchronous clock enable status.
LED # Function
D2 Yellow Alarm Indicator Normal=Dark
Alarm = Red lit
D3 AIS Alarm Indicator • Normal =Dark
Alarm = Red lit
D4 Loss of Frame Alarm Indicator Normal = Dark
Alarm = Red lit
D5 No Signal Alarm Indicator Normal = Dark
Alarm = Red lit
D6 PRI Link Channel Sync. For T1 card = Always Dark
D7 Clock Mode Indicator, Master Mode = Dark
Slave Mode = Green lit
D8 T1/E1 Indicator T1 = Green lit
•E1= Dark
D9 Heart Beat Normal = Flashing
Abnormal = Dark or Steady Green lit
T1 Card (T1 Module) Details (continued on next page)
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