Specifications

ASMi-52 Installation and Operation Manual Chapter 6 Troubleshooting and Diagnostics
Performing the Diagnostic Tests 6-19
2. Select RLB.
The RLB value in parenthesis changes to ON. Also, an additional
parameter, Loop Timeout, is displayed for the local ASMi-52.
3. Select Loop Timeout, if you want to set loopback timeout (in minutes).
The Loop Timeout value changes.
Loop timeout = 0 is forever!
4. Once you selected the loopback timeout, select Save to activate the RLB.
The RLB is initiated. The TST indicators light up on both local and remote
units.
Running Remote Loopback at a Repeater
Remote loopback can also be run at an SHDSL repeater installed in the line. The
RLB is activated from the CO unit only. The RLB checks performance the repeater
at which it is activated, all preceding repeaters, the local ASMi-52 and lines
connecting them (see Figure 6-23).

To activate the remote loopback at SHDSL repeater:
1. From the Diagnostics menu, select Repeater Test.
The Repeater Test menu appears (see Figure 6-24).
2. From the Repeater Test menu, select Repeater Number and choose repeater
at which you intend to activate the RLB Network.
3. From the Repeater Test menu, select RLB Network.
The RLB Network value in parenthesis changes to ON. Also, an additional
parameter, Loop Timeout, is displayed.
4. Once you selected the loopback timeout, select Save to activate the RLB
Network.
The RLB at the repeater is initiated.
Data
Local ASMi-52 Repeater 1 Repeater 2
Data
Clock
Clock
Line
Interface
Customer
Interface
Customer
Interface
Network
Interface
Network
Interface
Transmit
Receive
Local
DTE
Glue
Logic
Figure 6-23. Remote Digital Loopback at SHDSL Repeater
Note