SBM powered by Microsoft Lync Administrator's Guide 2010-11

6-18
Troubleshooting
Implement a Loopback
Implement a Remote Loopback
When you cannot determine the cause of a problem using local loopback, you
can try putting your PSTN line into remote loopback (contact your PSTN
carrier first). Your carrier might also ask you to put your line into remote
loopback so that it can run various tests.
Follow each section to place your SBM in remote loopback.
Ensure the Gateway is Not Running
First shut down the Media Gateway:
1. Access the SBM Dashboard. (See “Access the Dashboard” on page 3-3 of
Chapter 3: “Manage and Monitor the HP SBM Locally” if you do not know
how.)
2. In the Services section, click the Stop button next to HP Media Gateway.
If you prefer, you can alternatively open a command line (remember to right-
click and select Run as Administrator) and enter this command:
net stop netborder express gateway
Determine the Interface ID
See “Determine the Interface ID” on page 6-3 if you need help.
Display Interface Driver Events
It is a best practice to open a command prompt for monitoring activity on the
tested interface.
1. Open a command prompt, running the command as an administrator.
2. Enter this command:
stail.exe
Leave this window open throughout the rest of the process.