Softkeys as busy lamp field (blf), Setting a blf softkey, Softkeys – Aastra Telecom 57i IP Phone User Manual

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Softkeys as busy lamp field (blf), Setting a blf softkey, Softkeys | Aastra Telecom 57i IP Phone User Manual | Page 44 / 142 Softkeys as busy lamp field (blf), Setting a blf softkey, Softkeys | Aastra Telecom 57i IP Phone User Manual | Page 44 / 142
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