General Troubleshooting
111
AT&T SB67010 Gateway, SB67030 Deskset System Administrator’s Guide
You hear echoes, distorted
speech, or static.
At least one of the PSTN lines
has DSL, which is not properly
filtered.
Make sure you have a DSL filter plugged in between
each DSL line and the wall jack.
You may need a higher quality DSL filter than you
are using. You can also try plugging in the multiple
DSL filters in sequence to decrease the DSL
interference.
Move the DSL line to the lowest priority line, which
is Line 4 on any Gateway.
There is a non-system set
plugged into one of the
telephone line wall jacks.
Remove any parallel systems from the PSTN line
(connected through a splitter, for example), such as
an analog phone, fax machine, or alarm system.
The Gateway did not recognize
new PSTN line being plugged in,
so line calibration, which allows
the Gateway to adjust its
performance depending on the
phone lines’ characteristics, did
not occur.
Confirm an Ethernet cable is plugged into the
Deskset port marked
.
Ensure that the line LED is solid red before plugging
in the PSTN line.
When unplugging the line, wait two full seconds for
the LED to turn red before plugging it back in.
Calls are dropped.
Restoring the Deskset settings
while that extension is in use will
cause all calls to be dropped.
Avoid updating software or restoring the Deskset
settings when user is at the workstation.
Symptom
Probable Cause
Corrective Action
