Mitel MiVoice Business Troubleshooting Manual page 170

Troubleshooting Guide
Table 51: Troubleshooting IP Device Resiliency (continued)
SYMPTOM
IP phones display "lost
link to server" after an
upgrade from 3300
Release 3.x to Release
4.0.5.1.
162
POSSIBLE CAUSE
In 3300 Release 4.0,
redirect messages were
added to allow IP devices
to sync to the secondary
ICP for resiliency. During
an upgrade from 3.x, the
firmware improperly
interprets the redirect
message as an invalid IP
address, causing phone to
display "lost link to server"
message.
CORRECTIVE ACTION
For corrective procedure, refer to Technical Service
Bulletin, "IP Sets may remain in "lost link to server" state
after upgrading to Release 4.0", on Mitel Online.
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