Raisecom RC906-FXE1-M, User Manual, Page: 8 / 20

Raisecom Technology Co., Ltd
7
4 How to use
4.1 Front panel introduction
LAL
R
C906-FXE1
TX RX
TLK PWR
ACT RLK
RAL
OUT IN
4.1.1 Definitions of indicators
E1 link indicators
:
LAL
（
red
）
: Alarm of local E1 channel receiving signal loss.
ON: In E1 fractional mode, this indicator indicates: LOS (loss of signal), or
LOF (loss of frame), or AIS (up-stream alarm indication signal), or CRC
(cyclic redundancy check).
In E1 transparent mode, this indicator only indicates LOF (loss of
frame), or AIS (up-stream alarm indication signal).
OFF: E1 channel is normal.
RAL （ red ） : Alarm of remote E1 devices.
ON: In E1 fractional mode, there is LAL alarm of remote device.
OFF: E1 is normal.
Ethernet indictors:
RLK （ green ） : On, optical interface receiving link is normal;
Off, error of receiving link.
TLK （ green ） : On, optical interface transmitting link is normal;