Cabletron Systems CSX1200, CSX1000 manual Alarm LEDs PRI Only

LED INDICATORS

Alarm LEDs (PRI Only)

1. Bad Signal sent to CSU

2. RAI sent from CSU Intermediate

Device (CSU)

•LOF (loss of frame)

Also known as a red alarm.

Lights up when layer 1 has detected a qualified loss of frame condition (excluding AIS).

A loss of frame condition occurs when signals are still being received by the switch, but the 1200 can not detect the frames in the receive path.

If you have just installed your CyberSWITCH and you are seeing LOF, there may be a mismatch between the configured framing mode (for example, SF or ESF) and the framing mode of the incoming data.

•LOS (loss of signal)

Also known as a red alarm.

Lights up when layer 1 has detected a loss of signal.

LOS occurs when the CyberSWITCH sees no incoming signal at all.

1. Signal sent to CSU

2. No signal sent back from CSU

LOS detectedIntermediate Device

(CSU)

Workgroup Remote Access Switch 425