User`s manual

4-2
z HDSL RLB: (HTU-C mode only)
This test examines transmit and receive circuit of the HTU-C and
HTU-R and the HDSL loop.
E1 HDSL HDSL E1
HTU-C HTU-R
The data block will go through local WireSpan 3000/3000E (HTU-C)
and loop back at remote HDSL end of the WireSpan 3000/3000E
(HTU-R) to verify the local circuit and the HDSL line.