P2P:Peer to Peer,对等业务
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