Specifications

Watson TDM
Operating Manual
Watson-TDM-Manual-W.doc
Version 2.0-01
3-30
Revision: 2008-02-07
3.8 Test loops
Test loops can be activated via the monitor from both master and slave sides.
Loop 1 will initiate a loopback in the local modem, Loop 2 will initiate a loopback
in the remote modem. Regenerators can be individually looped. Only one test
loop can be active at any time.
Loops are controlled with the LOOP1, LOOOP2, LOOPREGn monitor commands,
see 8.3.
Activation of a test loop will deactivate any previous loop. A system reset will de-
activate any test loop. A non-urgent alarm is raised while any loop is active.
DSL Master Regenerator(s) DSL Slave
User
Interface
LOOPREGn LOOP2LOOP1
Figure 3-22: Test Loops controlled by the DSL Master
DSL Master Regenerator(s) DSL Slave
User
Interface
User
Interface
LOOP2 LOOP1
Figure 3-23: Test Loops controlled by the DSL Slave
Notes:
• Both the “Local” LED on the slave and the “Remote” LED on the master is lit
amber when a loopback is active.
• On the master side Loop 1 can only be activated locally. Activating Loop 2
turns on Loop 2 at the slave station. The “Status Local” LED will be lit amber
when Loop 1 is active.
• A non-urgent alarm is raised while Loop 1 or Loop 2 is active