User`s guide

Troubleshooting 254
Synapse User’s Guide
Device becomes sluggish or
unresponsive during or
immediately after software
upgrade.
Cannot connect to AT&T
server or the device
encountered unexpected
problem.
 Disconnect the power to the device, wait a few minutes,
then reconnect the power and try the upgrade process
again.
Device displays “Host Not
Found” after user attempts a
software upgrade.
The user attempted a
software upgrade with no
outside Internet connection.
 Ensure you have Internet connectivity and that 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.
Device displays an error
message other than “Host
Not Found” after user
attempts a software upgrade.
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].
Symptom Probable Cause Corrective Action General Troubleshooting