PTP（精密時刻同期プロトコル）
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<timefyi-glossary slug="ptp"></timefyi-glossary>定義
NTPが不十分な金融取引、通信、産業自動化などで使用する、ローカルネットワーク上でサブマイクロ秒精度の時刻同期を実現するIEEE 1588標準。