Installation guide

Synapse Installation Guide Back to Contents
Troubleshooting 109
Deskset cannot make or receive phone calls and the Deskset screen displays Synchronizing.
A Synapse device displays Host Not Found after a user attempts a software upgrade.
A Synapse device displays an error message other than Host Not Found after a user attempts a
software upgrade.
Probable Cause Corrective Action
The Deskset may have an
incompatible software
version.
 Log on to the WebUI using the IP address of the
Deskset and update the software. See “Updating
Devices” on page 145.
Probable Cause Corrective Action
The user attempted a
software upgrade with no
outside Internet connection.
 Ensure you have Internet connectivity and that
your connection to your Internet Service Provider
is operating normally.
 Ensure your firewall is not blocking http requests.
 Ensure that http requests are not being directed
to a firewall log-in page.
 Ensure that your http requests are not being
routed through a proxy server.
Probable Cause Corrective Action
The device encountered an
unexpected problem.
1. Disconnect the power to the device, wait a few
minutes, then reconnect the power and try the
upgrade process again.
2. If the error message persists, contact the person
who installed your system.
3. If your installer is unavailable, visit our web site at
www.telephones.att.com/smb or call
1 [phone]. In Canada, call
1 [phone].