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