For devices connected to a PBX other than the KX-NS1000, refer to the Troubleshooting for that PBX.
Cannot set the IP
address, subnet mask
address, and PBX IP
address to the IP-PT.
Cannot register the
The IP-PT cannot
connect to the PBX.
Whenever you try to
make calls using a SIP
phone, a busy tone is
The IP-PT does not
Originating an outside
call, call transfer, or
conference cannot be
An unusable value is
The necessary network
parameters are not set
to the IP-PT.
The wrong IP address,
subnet mask address,
PBX IP address, or
address was entered.
The Ethernet cable is
The DHCP server is not
The status of the port
that the SIP phone is
connected to is Out of
The ringer volume is off.
flexible button does not
exist on the PT.
Set an IP address within the valid range.
IP address of the IP-PT/PBX: "188.8.131.52" to
"184.108.40.206" Subnet mask address:
"0.0.0.0" and "255.255.255.255")
When not using the DHCP Server feature
or an external DHCP server, set the IP
address, subnet mask address, and enter
the PBX IP address. If necessary, also
enter the IP address of the default
When using the DHCP Server feature or
an external DHCP server, enter the PBX
Check each parameter and enter the
Check the Ethernet cable connections.
Restart the external DHCP server.
Confirm whether the DHCP Server feature
Disable DHCP and re-enter settings as
Change the port status from Out of
Service to In Service using Web
Turn on the ringer volume.
Programme the flexible button. Refer to
"2.21.1 Fixed Buttons" in the Feature