Performing A Loopback Test - Siemens RX1500 User Manual

RUGGEDCOM ROX II
User Guide
Parameter
ddsName
t1e1Name
t3e3Name
all-interfaces
3. On the Trigger Action form, click Perform to clear the statistics.
Section 3.24.5

Performing a Loopback Test

Loopback tests are a useful means of testing the T1/E1 hardware on the device and the T1/E1 connection with
remote devices. Three types of tests are available:
• Digital Loopback – ROX II digitally sends frames and immediately returns them to the device. This test is used
to isolate problems within the T1/E1 circuit.
• Remote Loopback – ROX II transmits frames to the Tx port and compares them with frames received on the Rx
port. A loopback plug or cable must be installed on the T1/E1 port. This test is used to isolate problems within
the WAN module.
• Line Loopback – ROX II transmits frames across the T1/E1 line to a remote Channel Service Unit/Data Service
Unit (CSU/DSU). This test determines if a problem exists outside the device.
Regardless of the loopback type, a loopback test is successful if the frames received match those that were sent.
Missing frames and frames that contain discrepancies indicate a potential problem in the T1/E1 hardware or line.
To perform a loopback test on a WAN interface, do the following:
IMPORTANT!
Performing a loopback test on an active interface will immediately cause it to go down. However, the
trunk will be automatically initialized after the test is complete.
1. Make sure a WAN interface has been configured. For more information, refer to
a WAN Interface".
Navigate to interfaces » wan and click loopback in the menu. The Loopback Test and Trigger Action
2.
forms appear.
Performing a Loopback Test
Description
Select the DDS interface for which to clear statistics.
Select the T1E1 interface for which to clear statistics.
Select T3E3 interface for which to clear statistics.
Clear statistics for all WAN interfaces.
Chapter 3
Device Management
Section 3.24.2, "Configuring
157