7.1.3 Operation
Note
For devices connected to a PBX other than the Main Unit, refer to the Troubleshooting for that PBX.
PROBLEM PROBABLE CAUSE SOLUTION
• Cannot set the IP
address, subnet mask
address, and PBX IP
address to the IP-PT.
• An unusable value is
being set.
• Set an IP address within the valid range.
IP address of the IP-PT/PBX: "1.0.0.0" to
"223.255.255.255
" Subnet mask address:
"0–255.0–255.0–255.0–255" (except
"0.0.0.0" and "255.255.255.255")
• Cannot register the
IP-PT.
• The necessary network
parameters are not set
to the IP-PT.
• 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
gateway.
• When using the DHCP Server feature or
an external DHCP server, enter the PBX
IP address.
• The IP-PT cannot
connect to the PBX.
• The wrong IP address,
subnet mask address,
PBX IP address, or
default gateway
address was entered.
• Check each parameter and enter the
correct value.
• The Ethernet cable is
not connected
correctly.
• Check the Ethernet cable connections.
• The
DHCP server is not
active.
• Restart the external DHCP server.
• Confirm whether the DHCP Server feature
is enabled.
• Disable DHCP and re-enter settings as
appropriate.
• Whenever you try to
make calls using a SIP
phone, a busy tone is
heard.
• The status of the port
that the SIP phone is
connected to is Out of
Service.
• Change the port status from Out of
Service to In Service using Web
Maintenance Console.
• The IP-PT does not
ring.
• The ringer volume is off. • Turn on the ringer volume.
• Originating an outside
call, call transfer, or
conference cannot be
performed.
• The corresponding
flexible button does not
exist on the PT.
• Program the flexible button. Refer to
"7.1.1 Fixed Buttons" in the Feature
Manual.
• The IP address of the
PBX
for networking has
been forgotten.
-
• You can check the current IP address by
PT Programming.
For details, refer to the PT Programming
[991] in PT Programming Manual.
262 Installation Manual Document Version 2016-03
7.1.3 Operation
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