247
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 )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.
Waiting for link
OR
Lost link to Server
IP phone fails to receive
Keepalive message in
30 seconds.
Verify if the network or the controller is
down.
There is electrical
interference.
Verify the power source, and change the
location of the power source.
Table 46: IP Phone Registration Troubleshooting (continued)
Error Message on
Display
Probable Cause
Corrective Action
(Page 4 of 5)
Summary of Contents for SX-200 ICP - 1.0 5020
Page 1: ...Release 4 0 CX CXi Controller TECHNICIAN S HANDBOOK ...
Page 9: ...Chapter 1 Introduction ...
Page 10: ...2 SX 200 ICP CX CXi Technician s Handbook ...
Page 24: ...16 SX 200 ICP CX CXi Technician s Handbook ...
Page 25: ...Chapter 2 Basic Installation ...
Page 26: ...18 SX 200 ICP CX CXi Technician s Handbook ...
Page 75: ...Chapter 3 Basic Programming ...
Page 76: ...68 SX 200 ICP CX CXi Technician s Handbook ...
Page 89: ...81 Basic Programming The keys on the 5412 PKM are numbered as follows ...
Page 98: ...90 SX 200 ICP CX CXi Technician s Handbook Figure 10 Administrator Mailbox Menu ...
Page 142: ...134 SX 200 ICP CX CXi Technician s Handbook ...
Page 143: ...Chapter 4 Advanced Installation and Programming ...
Page 144: ...136 SX 200 ICP CX CXi Technician s Handbook ...
Page 183: ...Chapter 5 Routine Maintenance ...
Page 184: ...176 SX 200 ICP CX CXi Technician s Handbook ...
Page 219: ...Chapter 6 Basic Troubleshooting and Repair ...
Page 220: ...212 SX 200 ICP CX CXi Technician s Handbook ...
Page 245: ...Chapter 7 Advanced Troubleshooting and Repair ...
Page 246: ...238 SX 200 ICP CX CXi Technician s Handbook ...
Page 269: ...Appendix A Default Database Values ...
Page 270: ...262 SX 200 ICP CX CXi Technician s Handbook ...
Page 326: ...318 SX 200 ICP CX CXi Technician s Handbook ...
Page 327: ...Appendix B Part Numbers ...
Page 328: ...320 SX 200 ICP CX CXi Technician s Handbook ...
Page 336: ...328 SX 200 ICP CX CXi Technician s Handbook ...
Page 337: ...Appendix C System Cabling ...
Page 338: ...330 SX 200 ICP CX CXi Technician s Handbook ...
Page 343: ...Appendix D Folio Views E Docs Tips ...
Page 344: ...336 SX 200 ICP CX Technician s Handbook ...