You can change your 12-key PKM to a 48-key PKM. You can also add a second 48-key PKM to an existing 48-key PKM (Dual PKM).
NOTES
To support a dual PKM, the phone must have an H2 hardware revision with main load of 9.4 and a boot load of 9.3 or later.
When changing/adding a PKM on 5020 IP Phones, the phone must be rebooted before programming the PKM.
To program an additional or larger PKM:
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IP Sets form (
Select the device to which the PKM is connected.
IP Phone: change the Auxiliary Module field to the new PKM model
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Set Keys form
Program the additional keys.