Objective instance 目標示例
    Open system interconnection (OSI) 開放系統(tǒng)互連
    Operation , adminstration and maintenance (OAM) 　運行、管理和維護
    Operation , adminstration , maintenance and provisioning (OAM&P) 運行、管理、維護和指配
    Operation system (OS) 操作系統(tǒng)
    Operation system function (OSF) 　 操作系統(tǒng)功能
    Optical amplifier section adaptation (OASA) 光放大段適配
    Optical amplifier section termination (OAST) 　光放大段終端
    Optical channel adaptation (OCA) 　光通道適配
    Optical channel termination (OCT) 　光通道終端
    Optical multiplex section adaptation (OMSA) 　 光復(fù)用段適配
    Optical multiplex section termination (OMST) 　光復(fù)用段終端
    Optical return loss (ORL) 光回波損耗
    Optical signal to noise ratio (OSNR) 　光信噪比
    Optically amplified receiver (OAR) 光放大接收機
    Optically amplified transmitter (OAT) 光放大發(fā)送機
    Orderwire 　公務(wù)，公務(wù)線
    Out-of-frame (OOF) 幀失步
    Out-of-frame second (OFS) 　幀失步秒
    Overhead 　開銷
    Overhead access (OHA) 　開銷接入