ZyXEL Communications MSC1024G Series User Manual page 186

Chapter 8 Diagnostic Screens
Figure 101 IMA Loopback
The following table describes the labels in this screen.
Table 65 IMA Loopback
LABEL
IMA
Loopback
E1
IMA
186
DESCRIPTION
Select the slot of an IMA line card from the Slot drop-down list box and a test item (E1,
IMA, F5 end2end or F5 segment).
Specify the corresponding options of the IMA loopback test to use. Click Set to
configure the mode for the selected E1 port. Click Get to see the results. Click Test to
perform the loopback test.
Select this to perform an E1 physical layer loopback test. Select an E1 port and one of
the following modes for the test.
None: Select this to stop the previous E1 loopback test.
Line: Select this to return all physical or electrical signals received from the remote
connected device.
In-ward: Select this to force all transmitting data to return to this port.
Payload: Select this to return all data received from the remote connected device.
Select this to perform an IMA (the second layer) loopback test. Configure the following
for this test.
Group: Select the number of an IMA group for the test.
Link: Select the number of an E1 link.
Operation: Select Disable to stop the previous IMA loopback test. Select Enable to
continue the previous IMA loopback test.
Test Pattern: Type a 2-digit hexadecimal number the IMA line card will add into IMA
Control Protocol (ICP) cells before sending them to the remote connected device. The
remote device should also send ICP cells with this number to the IMA line card.
Otherwise, there is an IMA-layer connectivity problem between these two devices.
MSC1000G/1024G/1224G Series User's Guide