I have to make sure the existing firmware of the IP phones will be compatible after the upgrade of the call manager from 4.2 to 6.1
when I check the device default configuration on the call manager, the load information indicate "P00308000400".
I am checking the compatibility from this website:
which indicates that I require the firmware version for cisco unified communication manager 6.1
8.0(7) - SCCP
8.0(8) - SCCP
8.0(9) - SCCP
how can I find out what firmware version is "P00308000400" on my existing call manager 4.2?
also how can I upgrade the firmware for the IP phone... do I upgrade the firmware first on the call manager 4.2. before I upgrade the call manager to 6.1? or I upgrade the call manager to 6.1. first and then after the I upgrade the firmware? does the sequence matters?
Just wanted to add a couple of notes to the great tips from my friend Paolo (+5 points here Paolo :) This Firmware stuff always takes some getting used to.
You have to keep in mind that when you upgrade to 6.1(x) the existing phones will check to see what is installed on the 6.x Device Defaults, and if the Firmware is newer they will all upgrade.
This is key when trying to figure out the Upgrade / Migration Maintenance window time :)
If you have 3,000 phones you may not want them all to have to go through this process at the same time you are working through the CUCM Upgrade itself.
Many people determine what the new Firmware will be on the new 6.x build and upgrade the phones (on CCM 4.2) ahead of time.
If you look at the "Device Defaults" page on both the CCM 4.2 and CUCM 6.1(x) builds you will be able to see what changes are required.
Clear as mud!
Here are some docs related to Firmware naming conventions;
Firmware Naming Conventions
How to Find the Firmware Version From a Cisco IP Phone
Hope this helps!