... for intercom/Outgoing Call, Call Transfer, Call pickup, paging. 4.Function of Key Phone-Hand-free, Redial, Conference, Hold, Memory, ... content, call information, charge display and extension number; (3) Other function keys and programming keys; “1”—“30” __ programming keys, ,can ... also be programmed as extension keys and function keys; “31” __ PAGE UP”- for forwarding to check ...