Mitel 3300 Technician's Handbook page 163

Troubleshooting
d. If there are excessive runt frames, check for bad
cables, duplex mismatches or bad PC NIC.
5. For network connectivity problems, identify the path
between two end devices by doing the following
PING test (in order):
a. Local.
b. Local gateway.
c. Remote gateway.
d. Remote IP.
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