Qlink-3000 Multiplexing modem
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Copyright © 2003 -2005 Cronyx Engineering
25
Local loop on the link
Local device: link loop
Remote device: normal operation
Port 0
(E1)
Port 1
(ETH)
Port 0
Port 1
AIS
When the loop is enabled on the SHDSL link, the data received from the link are turned
back. In this case, local and remote Ethernet ports are disconnected from the link, and
the AIS signal is output to local E1 port(s). The LINK-LOC indicator blinks (single
flashes), its color depends on the SHDSL port status: red - connection not established,
or errors in the link (CRC anomaly, LOSW defect, Loop attenuation defect, SNR margin
defect, LOSW failure), green - no errors.
Link remote loop
Local device: link remote loop
Remote device: Link loop enabled
after remote request
Port 0
(E1)
Port 1
(ETH)
Port 0
(E1)
Port 1
(ETH)
AIS
The remote device after request may enable the loop on the SHDSL link. In this case,
the data received by the remote device are turned back to the link. Then local and remote
Ethernet ports are disconnected from the link, and the AIS signal applied to the remote
E1 port(s). The LINK-REM indicator on the local device and the LINK-LOC indicator
on the remote device blink (single flashes).
