Qlink-3000 Multiplexing modem
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Copyright © 2003 -2005 Cronyx Engineering
17
This indicator shows the status and the mode of the E1 port. The color shows the port
status: green - no errors (OK), red - no link signal (LOS) or error (AIS, LOF, LOMF).
The E1 port operating mode is shown by blinking: no blinking - normal operation,
blinks (single flashes) - the BER tester is enabled on the port tributary or loop is enabled
for the port, blinks (continuously) - loop is enabled on the port tributary. If the port is
disabled, then the corresponding E1-LOC indicator is extinguished. The table contains
the possible states of the E1-LOC indicator:
Color
Blinking
Description
Does not light
Port disabled.
Green
No
Normal operation (status = OK, local loop and
port tributary loop disabled, BER tester
on the port tributary disabled).
Green
Single
Port status = OK, BER tester enabled on port tributary
flashes
tester, or the local loop is enabled towards the G.703
link.
Red
No
No link signal G.703 (LOS). Local loop and port tributary
loop disabled, BER tester on port tributary disabled.
Red
Single
No link signal G.703 (LOS). BER tester
blinks
enabled on port tributary BER or local
loop enabled towards G.703 link.
Red
Flashes
If the E1-REM indicator flashes red,
the port tributary loop is enabled. If the E1-REM indicator
does not blink, then there is signal in the link, but either
the AIS alarm indication signal is received, or
Loss Of Frame (LOF) or Loss of MultiFrame
synchronization (LOMF) found.
4
Remote E1 port status and mode indicator (E1-REM)
This indicator shows the status and the mode of the remote E1 port. If the indicator is
green, then there are no errors on the remote side, and red indicates error (FARLOF - the
remote side transmits the alarm indication signal (bit A of the zero timeslot). The E1-
REM flashes red, if the tributary loop is enabled on the port tributary. If the port disabled
or there is no information from the remote device (for example, when operating in the
unframed mode), then the corresponding E1-REM indicator does not light. The table
contains the possible states of the E1-REM indicator:
Color
Blinking
Description
Does not light
Port disabled or no information from the remote device.
