Problem Cause/Solution
The base unit (KX-TGP550 only) does not
ring.
•The ringer volume is turned off. Adjust the ringer volume.
For details about the operations, refer to the User Guide
on the Panasonic Web site (® see Introduction).
•Check the VoIP status in the Web user interface and
confirm that each line is registered properly (® see To
check the setting status in the Web user interface in
this section).
•Check that the SIP server address, URLs of the
configuration files, encryption key, and other required
settings are correct.
•Check the firewall and port forwarding settings on the
router (® see 1.1.10 Other Network Settings).
•Check [Multi Number Settings] in the [Telephone] tab in
the Web user interface (® see 3.7.1 Multi Number
Settings).
•Check [Call Control] for each line in the [Telephone] tab
in the Web user interface.
–If [Do Not Disturb] is set to [Yes], the base unit or
handset does not receive calls (® see 3.7.3.3 Call
Features).
–If [Unconditional (Enable Call Forward)] is set to
[Yes], the base unit or handset does not receive calls
(® see 3.7.3.4 Call Forward).
–If [Block Anonymous Call] is set to [Yes], the base
unit or handset does not receive anonymous calls (®
see 3.7.3.3 Call Features).
•Check that [Do Not Disturb], [Enable Call Forward], and
[Block Anonymous Call] are not controlled by your phone
system.
•If 3 calls are being handled by the base unit and/or
handsets simultaneously, a new call cannot be received
and the unit will not ring.
•For details about settings, consult your network
administrator or phone system dealer.
220 Administrator Guide Document Version 2010.03.15
7.1 Troubleshooting