5.1 Troubleshooting

5.1.1 Installation

PROBLEM PROBABLE CAUSE SOLUTION
You cannot make/receive
calls via an IP network.
•DSP card malfunction •Replace the corresponding card.
•IPCMPR card
malfunction
•Replace the IPCMPR card (be sure to turn
off the PBX when replacing).
•Not enough activation
keys
•Purchase additional activation key codes.
Please consult a certified dealer for
details.
•Poor connection •Make sure that an 8-pin twisted pair cable
is used for connection.
•Make sure that none of the CAT 5 cables
in use are over 100 m (328 ft) in length.
•Make sure that a straight cable is used for
connection to a switching hub.
•Network malfunction •Make sure that all network devices in use
are switched on.
•Make sure that there is no unwanted
firewall in the IP network.
IP-PTs/SIP Extensions do
not operate.
•DSP card malfunction •Replace the corresponding card.
•IPCMPR card
malfunction
•Replace the IPCMPR card (be sure to turn
off the PBX when replacing).
•Not enough activation
keys
•Purchase additional activation key codes.
Please consult a certified dealer for
details.
•IP-PT/SIP Extension
not registered
•Register the corresponding IP-PT/SIP
Extension.
•IP-PT/SIP Extension
malfunction
•Replace the IP-PT/SIP Extension.
•Poor connection •Make sure that an 8-pin twisted pair cable
is used for connection.
•Make sure that none of the CAT 5 cables
in use are over 100 m (328 ft) in length.
•Make sure that a straight cable is used for
connection to a switching hub.
•Network malfunction •Make sure that all network devices in use
are switched on.
•Make sure that the IP-PT/SIP Extension
is not blocked by the firewall or other
network devices.
120 Installation Manual Document Version 2011-10
5.1.1 Installation