PROBLEM
PROBABLE CAUSE
SOLUTION
•
Cannot set the IP
address, subnet mask
address, and PBX IP
address to the SIP
Phone.
•
An unusable value is
being set.
•
Set an IP address within the valid range.
IP address of the SIP Phone/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 SIP
Phone.
•
The necessary
network parameters
are not set to the SIP
Phone.
•
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 SIP Phone 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 SIP Phone does
not ring.
•
The ringer volume is
off.
•
Turn on the ringer volume.
The status of the port
property of an SLT
extension is FAULT.
•
The telephone is off-
hook.
Put the telephone on-hook and restart the
PBX.
•
There is a problem in
the wiring.
Disconnect all cabling between the PBX and
SLTs, and restart the PBX.
After restarting, if operation is normal, there is
probably a problem in the wiring or
connection. (For example, there might be a
short circuit in the switchboard or cabling.)
•
The SLT circuitry is
damaged.
Consult a certified dealer.
6.1.3 Operation
101
