AT&T SB67040 User Manual page 300

Symptom
Calls dropped.
Unable to find a way to turn
on Do Not Disturb or Call
Forward All.
Troubleshooting
Synapse User's Guide
Probable Cause
Restoring Deskset settings
while that extension is in use
causes all calls to be dropped.
Cordless Handset lost link
with the Deskset.
The network is down.
The telephone line was
disconnected while on an
outside call.
These functions can only be
enabled on the Deskset.
Corrective Action
Update software and restore Deskset settings only in Idle
mode with no calls pending.
Verify that your Cordless Handset battery is charged and
that it is within range of the Deskset.
Update software and restore Deskset settings only in Idle
mode with no calls pending.
Verify that your office network is active and that your
Deskset has power.
Ensure that the Ethernet cable is securely plugged into
the network port beneath your Deskset labeled
that the other end is plugged into your office LAN.
Ask the system administrator to check that the PSTN
Gateway telephone lines are connected.
To activate Do Not Disturb (DND) or Call Forward All,
press or
mode.
300
Cordless Handset Troubleshooting
on the Deskset while in Idle
and