... for intercom/Outgoing Call, Call Transfer, Call pickup, paging. 4.Function of Key Phone-Hand-free, Redial, Conference, Hold, Memory, Monitor, ... , call information, charge display and extension number; (3) Other function keys and programming keys; “1”—“30” __ programming keys, , ... disturb and forwarding; “SCROLL” __The switch of the DSS; (4) Dial Panel; (5) Special Function Key: “HOLD” __ for Co. Line ...