Atrie WireSpan 3000, Руководство пользователя

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4-1
CHAPTER 4
DIAGNOSTIC
The WireSpan 3000/3000E supports a variety of loop back to assist
you in isolating network problem. These tests can be used to analyze
the HDSL line and the local and remote E1 HDSL performance. These
tests can be initiated from the front panel.
The following tests are available:
z
LLB: Tests the local E1 and DTE loop
Local
Side
Data
Equipment E1 HDSL
The data block will be looped back at the local HDSL end of the
WireSpan 3000/3000E to Verify the local circuit (E1 and DTE).
z
DLB: This test examines transmit and receive circuit of the HTU-C
and HTU-R and the HDSL loop.
Remoe
Side
Data
Equipment
E1 HDSL HDSL E1
Local HDSL Device Remote HDSL Device
The data block will go through remote WireSpan 3000/3000E (HTU-R)
and loop back at local HDSL end of the WireSpan 3000/3000E (HTU-C)
to verify the remote circuit and the HDSL line.