Troubleshooting
145
Synapse SB67020/SB67025 Deskset User’s Guide
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Calls Generally
Calls are dropped.
Deskset cannot make or receive phone calls.
On external calls, you hear an excessive echo at the Deskset.
Probable Cause
Corrective Action
Restoring Deskset settings or
updating software while that
extension is in use will cause
all calls to be dropped.
Your system administrator should avoid updating
software or restoring Deskset settings when you
are likely to be using the phone.
The network is down.
Ensure that the Ethernet cable is securely
plugged into the network port beneath your
Deskset labeled
and that the other end is
plugged into your office LAN.
The Deskset extension was
changed during the call.
Contact your system administrator. If changes
were made to your extension while you were on
a call, that call is dropped.
Maximum Call Duration was
exceeded.
None. External calls that you transfer or forward
to another external number use two lines. The
duration of such calls is limited by a timer that
your system administrator sets.
Probable Cause
Corrective Action
Putting the T1 Gateway into
loopback test mode prevents
phone calls from occurring.
Do not run loopback tests while the T1 trunk is in
use.
Your Deskset is not
synchronized.
Press
MENU
–>
4
to verify that the
Deskset
Status
is
Synchronized
. See
“Deskset cannot
make or receive phone calls and the Deskset
screen displays
Synchronizing...
.” on page 144
.
Your Deskset is not
connected to the LAN.
Ensure that the Ethernet cable is securely
plugged into the network port beneath your
Deskset and that the other end is plugged into
your office LAN.
Probable Cause
Corrective Action
The automatic PSTN Gateway
line calibration did not run
properly.
See your system administrator. There may be
non-system equipment connected in parallel to
the telephone line.
