Zhone Technologies IMACS-200 - Manual (Page 207)

OHSU Ports 10-5
Figure 10-4.Local User Loopback
Choose the net (network) setting to loop the incoming data from the network back toward the
far end. This loopback is shown in Figure 10-5. It tests some of the local OHSU port circuitry,
the local system common ports, the WAN link port, the far-end OHSU port and CPE device,
and the WAN link between the two sites.
Figure 10-5.Local Network Loopback
Alarm
The alarm field is an indication field that shows the optical link status.
Table 10-3. Alarm Field
Field Optical Link Status
Norm The optical link is operating properly.
Yellow The TPE is reporting a reception fault.
Red The OHSU port is reporting a reception fault.