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Syn248 Installation and Configuration Guide Back to Contents
Troubleshooting 94
A Syn248 device displays an error message other than Host Not Found after a user attempts a
software upgrade.
Gateway Setup
Line-Status LEDs do not flash red when the telephone line cords are plugged into the Gateway
after power is switched on.
Bypass jack does not work during power failure.
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, visit our web site at
www.telephones.att.com/smb or call
1 (888) 386-2006. In Canada, call 1 (888)
469-2005.
Probable Cause Corrective Action
Line calibration allows the
Gateway to adjust its
performance depending on
the phone lines’
characteristics. The Gateway
may not have performed
calibration.
Make sure an LAN cable is plugged into the port
marked LAN.
Unplug the telephone line. After the Gateway line
LED turns red, wait 15 to 30 seconds before
plugging the line back in.
Probable Cause Corrective Action
The line is not in the correct
jack.
Make sure there is a line plugged into Line 4.
Make sure an analog phone is plugged into the
Bypass jack (using a modular line cord).
95


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