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Doorphone, Answering doorphone calls, Opening of the doorlock – AASTRA DT4x2 for BusinessPhone User Guide EN User Manual

Page 78

Doorphone, Answering doorphone calls, Opening of the doorlock | AASTRA DT4x2 for BusinessPhone User Guide EN User Manual | Page 78 / 130 Doorphone, Answering doorphone calls, Opening of the doorlock | AASTRA DT4x2 for BusinessPhone User Guide EN User Manual | Page 78 / 130