| [SYMBOL] [A] [B] [C] [D] [E] [F] [G] [H] [I] [J] [K] [L] [M] [N] [O] [P] [Q] [R] [S] [T] [U] [V] [W] [Z] OCF (Opcode Command Field) OGF (Opcode Group Field) One-shot timers Open source Open systems communication (OSI) open() Option and padding fields, IP packet header OSI layers 1 and 2a Oslo University web site Outer queuing discipline Output chain 2nd owner |