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Release 3.3 171
CAUTION: Sets released from the factory after Release 3.2 will have the boot capability
built into them. They will not have to follow the above set configuration sequence.
However, if in doubt, the above configuration steps should be followed.
Mixed Release 3.1 and 3.2 Network
The 3300 ICP Release 3.2 software will be delivered into existing IP trunking configurations
made up of 3300 ICPs running Release 3.1 software. To support the Cisco Discovery Protocol
(CDP) in these configurations, all IP sets requiring the CDP protocol will need Release 3.2 set
firmware. Every IP telephone must receive the Release 3.2 set firmware during its boot
sequence.
All 3300 ICPs in the DHCP domain must have the 128: IP Phone TFTP Server refer to the
Release 3.2 set firmware load. The IP Phone TFTP Server is part of the DHCP options form.
There are several methods of configuring the IP Phone TFTP Server:
1. The Release 3.1 IP Phone TFTP Server may reference any Release 3.2 TFTP server.
2. The Release 3.1 IP Phone TFTP Server may reference a centralized TFTP Server that
contains the Release 3.2 set firmware load.
3. The Release 3.1 system can have the Release 3.2 set firmware loads manually loaded in
the IP Phone TFTP Server directory from a Release 3.2 system.
WARNING: Failure to correctly configure the 128: IP Phone TFTP Server in a mixed
Release 3.2 and Release 3.1 network topology may cause the IP sets to become
non-functional.