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How can I configure my T38 with Grandstream UCM6102 to use with event list blf?
If I add UCM_remoteBLF as event list, and set it into T38, blf button show "undefined" and all button are off.

I would to show on other phones my dnd status setting by programmable key on the T38

Hello, do you mean BLF list feature? we haven't tested the feature in T38 with UCM6102. They should not be full compatible.
Can BLF work with UCM6102?

Regards,
James

Yes, blf list features. When I try to add blf list as button dss, my dss button light off.
blf works well with UCM6102