Installation guide

Synapse Installation Guide Back to Contents
Troubleshooting 112
I cannot make or receive phone calls and the T1 Gateway SYN/ACT LED is OFF and RAI/LOF/LOS
LED is RED.
PSTN 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 T1 Gateway is not
synchronized with the T1
service.
 Check the correct T1 cable is used and that it is
properly connected to the T1 Gateway.
Probable Cause Corrective Action
Line calibration allows the
PSTN Gateway to adjust its
performance depending on
the phone lines’
characteristics. The Gateway
may not have performed
calibration.
 Make sure an Ethernet cable is plugged into the
port marked LAN.
 Unplug the PSTN telephone line and wait two full
seconds for the Gateway line LED to turn red
before plugging it back in.
Probable Cause Corrective Action
The PSTN line is not in the
correct jack.
 Make sure there is a PSTN line plugged into Line 4.
 Make sure an analog phone is plugged into the
Bypass jack (using a modular line cord).