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3 set direct connect disable timer, 4 set direct connect call-down number, 5 set resident programming number – DoorKing 1820 Telephone Intercom User Manual

Page 45

3 set direct connect disable timer, 4 set direct connect call-down number, 5 set resident programming number | DoorKing 1820 Telephone Intercom User Manual | Page 45 / 63 3 set direct connect disable timer, 4 set direct connect call-down number, 5 set resident programming number | DoorKing 1820 Telephone Intercom User Manual | Page 45 / 63
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