Specifications

Chapter 6 Troubleshooting and Diagnostics ASMi-52 Installation and Operation Manual
6-18 Performing the Diagnostic Tests
ASMi-52
Local Test or Remote Test
LLB from DTE: OFF
RLB from DTE: OFF
1. LLB (ON)
2. Loop Timeout (min)(0-4095) ...(5)
3. LEDs test
4. Clear all
5. Save
>
ESC-previous menu ; !–main menu ; &–exit; @-scroll
Figure 6-21. Local/Remote Test Menu
Running the Remote Loopback
The remote loopback (RLB) checks the performance of both the local and remote
ASMi-52 modems, and the lines connecting them (see Figure 6-22).
ASMi-52 allows you to set the loopback timeout causing the RLB to deactivate
automatically after the desired period of time.
RLB cannot be initiated from a CPE unit if the CO operates with an external clock,
and is configured to one of the following data rates:
2-wire: 2112 kbps, 2176 kbps, or 2240 kbps
4-wire: 4224 kbps, 4352 kbps, or 4480 kbps
Data
Local ASMi-52 Remote ASMi-52
Data
Clock
Clock
Line
Interface
Line
Interface
Transmit
Receive
Receive
Transmit
Remote
DTE
Local
DTE
Glue
Logic
Glue
Logic
Figure 6-22. Remote Loopback

To activate the remote loopback:
1. From the Diagnostics menu (see Figure 6-20), select Local Test to run the RLB
on the local ASMi-52, or select Remote Test to run the RLB on the remote
ASMi-52.
The Local/Remote Test menu is displayed (see Figure 6-21).
Note