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61200.175L1-1 FSU 5622 ESP User Manual 19

Chapter 3. Operation

LED Descriptions

The FSU 5622 ESP has seven LED indicators: TD1, RD1, TD2,

RD2, TDN, RDN, and ALM/TST. These LEDs are identified as

follows:

TD1: Transmit Data (DTE 1)

This LED is active when the FSU 5622 ESP DTE 1 port is trans-

mitting data.

RD1: Receive Data (DTE 1)

This LED is active when the FSU 5622 ESP DTE 1 port is receiv-

ing data.

TD2: Transmit Data (DTE 2)

This LED is active when the FSU 5622 ESP DTE 2 port is trans-

mitting data.

RD2: Receive Data (DTE 2)

This LED is active when the FSU 5622 ESP DTE 2 port is receiv-

ing data.

TDN: Transmit Data (Network)

This LED is active when the FSU 5622 ESP Network port is

transmitting data.

RDN: Receive Data (Network)

This LED is active when the FSU 5622 ESP Network port is

receiving data.

ALM/TST: Alarm/Test

This LED is active when an alarm condition exists or when the

unit is in test mode. Alarm conditions include:

DDS Alarm Conditions

• Open loop on network

• No frame synchronization

• OOS/OOF

Frame Relay Alarm Condition

• Network frame relay signaling state down

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ADTRAN 1204006L1 Bedienungsanleitung Seite 35