Abeo LAN over G.703 Extender
15
Other steps
It may be useful to set the AUTO MDI/MDI-X bit switch to DISABLED, in which case the port
presents a fixed MDI-X interface to the LAN.
Note that for 100M full duplex operation between the MXU9020 and a fixed (i.e. non-
negotiating) LAN port, Bit-switch 7 must be set to 100M FD. If this is not done, the MXU9020
will operate at the correct speed, but in half-duplex mode, and with a heavy error count.
4.3 Test Loop
Set the remote MXU9020 base panel bit-switch labelled
LOOPBACK
to the
ON
position.
When the
TEST LOOP
is activated at the remote MXU9020, the signal received from the local
BIt Error Rate Tester (BERT) unit at the E1 port is passed directly back to the BERT at the line
interface.
If the local BERT recognises its own transmissions, then the E1 link has been validated.
MXU9020
Summary of Contents for Abeo G.703 LAN
Page 18: ......
