... with 2 DSS with 128 keys 3.Caller ID Telephone 4.Transfer, Hold, Paging, Conference Console Phone ... monitor all extension and CO Lines Status. (1)Handset; (2)LCD WS824-3screen with two-row display ... redialing “ ” - Increase the volume of hand free, handset, and ringing. “ ” __ Decrease the volume of hand ... free, handset, and ringing. (6)The adjustment of the brightness ...