6 call forwarding features / commands, 1 set up for call forwarding - system wide, 2 call forwarding on / off per resident – DoorKing 1820 Telephone Intercom User Manual
6 call forwarding features / commands, 1 set up for call forwarding - system wide, 2 call forwarding on / off per resident | DoorKing 1820 Telephone Intercom User Manual | Page 40 / 63
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