CHAPTER 2.
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The components on the front panel of TEPRI2 have the functions below:
Table 2.7 Ports and LEDs of TEPRI2 Board
Port, LED
Function Description
P1
Port 1 for connecting T1/E1/PRI cables
P2
Port 2 for connecting T1/E1/PRI cables
LAN
Port for connecting to Ethernet
SIO
UART port (for tests)
TP1 LED
Indicating the type of the program operated in Port 1
- On: Port 1 operation in PRI
- Off: Port 1 operation in T1/E1
TP2 LED
Indicating the type of the program operated in Port 2
- On: Port 2 operation in PRI
- Off: Port 2 operation in T1/E1
L21 LED
Indicating the status of Layer 2 operation
- On: Normal
- Off: Abnormal
L22 LED
AIS1 LED
Indicating the reception of the alarm bit of the counterparty switch
- On: Alarm bit received
- Off: Alarm bit not received
AIS2 LED
LOS1 LED
Indicating the signal loss (LOS) of the counterparty switch
- On: When signals are week or has been damaged
- Off: When signals received properly
LOS2 LED
SYN1 LED
Indicating the status of frame synchronization with the counterparty switch
- On: No frame synchronized
- Off: Frame synchronized
SYN2 LED
RUN LED
- On (Green): Normal operation (blink at the interval of 200 ms)
- On (Orange): Debug mode operation (blink at the interval of 200 ms)
CLK LED
On when the reference clock is used as the system clock.
RST
Button for resetting board