P2P:Peer to Peer,对等业务
PCI:Peripheral Component Interconnect,外部链接 PCI:Personal Computer Interface,个人计算机接口 PCMCIA:Personal Computer Memory Card International Association,个人计算机存储卡国际协会 PICMG:PCI Industrial Computer Manufacturers Group,PCI工业计算机制造商组织 PKI:Public Key Infrastructure,公钥基础结构 PLS:Physical Layer Signaling,物理信令子层。关联词:MAU PoE:Power over Ethernet,基于以太网的供电系统 POP:Post Office Protocol,邮局协议 POS:Packet over SDH,SDH上的分组 PPP:Point to Point Protocol,点到点协议 PR:Policy Routing,策略选路 PWE3:Pseudo Wire Emulation Edge-to-Edge,端到端虚拟线模拟