ZyXEL Communications MSC1000G User Manual page 176

Chapter 6 Diagnostic Screens
Figure 99 IMA Loopback
The following table describes the labels in this screen.
Table 73 IMA Loopback
LABEL
IMA
Loopback
E1
IMA
176
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.
Management Switch Card User's Guide