Select system to unsubscribe, and press select, 4 renaming a system, Press menu, select , and press select – AASTRA DT690 for BusinessPhone User Guide EN User Manual
Page 106: Select system, and press select, Select rename system, and press select, Select a system from the list, and press edit, Enter the new name, Press save to save the changes, Press back to exit the menu, 3 in charger
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