AASTRA 4422 IP Office (SIP) for MX-ONE User Guide - Manual (Page 106)

Troubleshooting
Dialog 4422 IP Office 106
Troubleshooting
This section contains information on how to solve common
operational problems, and warnings you may receive.
Go through the following list if you encounter any problems. If this
checklist does not cover the problem, contact your system
administrator. If others have similar problems, there may be a
system error.
Fault / Display Probable cause Action or
comment
The phone is
locked
Disturbance on the
network.
Press the Clear
key, Mute key and #
simultaneously
for one or two
seconds. This will
restart the phone.
The access
warning triangle
occurs on the
display.
Disturbance on the
network or in the
telephone system.
Some features
might not work, but
the phone can be
used for receiving
and making calls.
No connection
to network!
occurs on the
display
There is no
connection to the
network.
Verify that the
phone is
connected to the
network by
checking the
connection.