Why do I get the message "invalid 44xx dlc" on my 4412d+ phone display when I am plugged into a merlin Magix R2.2 V7.2 first port? Do i need a different phone to be the operator?
One more thing, if you are planning to install a DSS onto the 4424D+ set then you will also need a power supply. But if you opt for the 4424LD set then it already comes with a power supply.
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