SBM powered by Microsoft Lync™ Administrator's Guide 2011-11

6-13
Troubleshooting
Implement a Loopback
Figure 6-8. Remote Desktop Command Prompt—wanec_client Commands (for
Echo Cancellation)
Initiate the Local Loopback. You must now start the loopback. The pro-
cess depends on how the port is connected.
Port Connected to the Telco. You can initiate the loopback in one of two
ways:
 Ask the carrier to enable remote loopback on its end.
 Send a remote loopback command (this requires the interface to be the
master clock):
Port Connected to Another E1/T1/J1 Port. You can either:
 Enable loopback on the second port (see “Implement a Remote Loop-
back” on page 6-18).
 Send the remote loopback command from the first port (the one being
tested)
Port Connected to a Loopback Connector. You can move to the next
task.
Syntax: wanpipemon -i <interface ID> -c Tsalb
Replace <interface ID> with the ID that you determined ear-
lier.