Pstn Gateway Setup - AT&T Synapse Installation Manual

Symptom
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

Symptom
On a PSTN Gateway, Line-
Status LEDs do not flash red
when the telephone line
cords are plugged into the
Gateway after power is
switched on.
On a PSTN Gateway, Bypass
jack does not work during
power failure.
Troubleshooting
Synapse Installation Guide
Probable Cause
The T1 Gateway is not
synchronized with the T1
service.
Probable Cause
Line calibration allows the
PSTN Gateway to adjust its
performance depending on
the phone lines'
characteristics. The Gateway
may not have performed
calibration.
The PSTN line is not in the
correct jack.
Corrective Action
Check the correct T1 cable is used and that it is properly

connected to the T1 Gateway.
Corrective Action
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.
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).
164
T1 Gateway Indicators
PSTN Gateway Setup