P p Packet Packet Aggregation Packet Loss Packet Scheduler / Queueing Discipline Packetization Pairing PAP Pause Frames PBX PCM PCR Peak Load PEM §... ... Periodic Inform PID Ping PKCS PLC Traffic Policing PoP Port Port Forwarding Port Speed PPID PPP PPPoA PPPoE §... ... Precedence Prefix delegation Preserve Value Private Key Protocol Proxy PSDN PSK PSTN PTM - Pulse-Time Modulation PTM Priority Point-to-Point Tunneling Protocol Public Key Top ↑