User manual

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5.9 Diagnostic
The diagnostic facility allows you to test the different aspects of your G.SHDSL .Bis NTU to determine if it is working properly.
Select diag and press [ENTER] or [RIGHT].
Loopback can test whether if the NTU is working properly with the connected device.
Press [ENTER] or [RIGHT] to setup the loopback.
For E1/T1 Interface model at CO side, there are loopbacks for: Local Digital, local, remote line, remote payload, farend line
and farend payload.
For Serial Interface model at CO side, there are loopbacks for: Local Digital, local, remote line, remote payload, farend line,
farend payload and V.54.
For E1/T1 Interface model at CPE side, there are loopbacks for: Local Digital, remote line, remote payload, farend line and
farend payload.
For Serial Interface model at CPE side, there are loopbacks for: Local Digital, remote line, remote payload, farend line, farend
payload and V.54.