Mitel 50005070 Instruction Manual Page 293

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  • TROUBLESHOOTING
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283
Advanced Troubleshooting and Repair
TFTP load failure Option 125/43 (Option
128 prior to Release
4.0) is not set up to
point to the right TFTP
server (Controller).
Check the DHCP server, and confirm that
the sw_tftp tag in option 125/43 (option
128 prior to Release 4.0) is pointing to the
right TFTP server (usually the SX-200 ICP
system IP address).
No network connectivity
between the controller
and the phone.
Confirm that the controller is connected to
the network.
For a Cisco L2 switch: verify that the L2
switch is access port (Voice LAN).
For an HP L2 switch: verify that the L2
switch is untagged (Voice LAN).
If the router is involved, make sure that
router’s MTU is set to 600 or more.
Firmware on controller
is missing or corrupted.
Verify that the firmware is in the sysro/tftp
directory (particularly if the user has
manually copied the firmware).
Confirm if TFTP on the controller is
corrupted (this can be verified by
connecting the IP Phone directly on the
controller, or by observing the behavior of
other IP Phones).
Waiting for link Option 125/43 (Option
129 prior to Release
4.0) is not programmed
correctly.
Check the call_Srv tag in option 125/43
(Option 129 prior to Release 4.0 ) on
DHCP to confirm that the IP address of the
SX-200 ICP controller is correctly
programmed.
The Layer 2 switch port
may be running
spanning tree.
Turn port fast on or disable Spanning tree
(whichever is possible).
The application server
is broadcasting or
multicasting on IP
Phone port or on PC
behind the IP Phone.
Turn off multicasting.
The PC behind the IP
Phone is changing
speed 100/10.
Depending on the NIC, you may need to
hardcode to 100 MB instead of auto
negotiation.
Table 59: IP Phone Registration Troubleshooting (continued)
Error Message on
Display
Probable Cause Corrective Action
(Page 4 of 5)
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