Mitel SX-200 ICP - 1.0 5020, Руководство техника

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SX-200 ICP CX/CXi Technician’s Handbook
Troubleshooting IP Phone Connectivity
Using a network analyzer to debug
If a network analyzer is required to debug an IP Phone it will be necessary
to use an Ethernet tap to ensure that the port settings are not compromised
or changed. For example: using a shared hub to allow the analyzer to “see”
packets being delivered to a Layer 2 port will change connectivity to the
port to 10 MB half-duplex.
If the analyzer indicates there are excessive collisions:
• check for duplex mismatch problems at the Ethernet port on
SX-200 ICP. The Layer 2 port attached to SX-200 ICP should be set
to 100 Full and not auto.
• check that for dual-port phones the NIC card of the attached PC to the
IP set is not 10 MB half-duplex. The NIC card should be 100 MB
full-duplex.
• for CRC errors: check if there is a faulty NIC card or flow-control.
• if there are excessive runt frames, check for bad cables, duplex
mismatches or bad PC NIC.
Connectivity problems
For IP Phone network connectivity problems, identify the path between two
end devices (example: IP Phone and SX-200 ICP) by doing the following:
• Execute a ping test from an IP Phone. Do this when the phone is
unable to register with its DHCP server (either the one in SX-200 ICP
or an external one if that is how the network is set up).
- Disconnect power from the phone by disconnecting it from the LAN.
- Reconnect the phone WHILE pressing the Superkey button.
- Press the “v” (volume down key) until INPUT IP Address.
- Enter an IP address on the same subnet as the device you will be
pinging (avoid conflicting addresses).
- If a mistake is made, press the “^” (volume up key) and start over.
Note: This step is not to be confused with the section on Troubleshooting
IP Phone Registration.