Polycom iPower 600 User Manual page 56

Chapter 6 - Troubleshooting Tips
© Polycom, Inc.
Problem
ISDN call attempt has failed; the
user has received an error message
Difficulty making LAN calls
(continued on next page)
Corrective Action
• Have the far-end system call your system.
To find out if the problem exists in one
direction only, ask the person at the far-end
site to call your system.
• Check the ISDN configuration.
- Contact your ISDN service provider and
verify that the ISDN lines are provisioned
according to the Preparing Your Network for
Collaboration document, which is available
at www.polycom.com.
- Check the configuration in the ISDN Setup
page in AdminTools. (Obtain the correct
numbers from your ISDN service provider.)
• Call a known good ISDN number.
• Run the ISDN Bit Error Rate Test. This test
allows you to place a call from one line to
another in order to verify line integrity.
Select Start>Programs>Polycom iPower>
Administrator>Network Test. If a line
connects, then the line is good.
• Check the number, system name, or LAN
address of the far-end system.
Make sure that the number being dialed is
correct and properly formatted and try the call
again.
• Make sure that the network cable is
connected and secure.
The LAN cable must be connected properly,
as shown in the iPower installation
documentation.
• Verify that the far-end system is working.
- To find out if the problem exists in one
direction only, ask the person at the far-end
site to call your system.
- Telephone the far end and find out if the
system is turned on and is functioning
properly. Ask whether the far-end system is
behind an IP network firewall. If it is, the far
end must provide a way for LAN traffic to go
through, which will allow a successful
connection.
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