tform architecture and design, 319-322 Service, see Call Home service Packet data network (PDN), 318, 319 uCPE Phone Home Process, 221 Packet delivery network gateway (PGW), see Packet Physical components, NFVI, 51 gateway (P-GW) compute, 52 Packet edge network, 52 paradigm, 250 storage, 52-53 platforms, 249-250 Physical function (PF), 212 Packet forwarding, 34 Physical layers (PHY layers), 235, 338 under normal conditions, 283-284 Physical network functions (PNF), 13, 15, 88, 257-258, Packet gateway (P-GW), 253, 318, 319 295, 318, 346 VNF components, 319-320 Physical network interface cards (pNICs), 208 Packet networks, 17 Physical resource blocks (PRBs), 165 Packet processing capabilities, 207-208 Picocells, see Customer premise-based small cells Packet processors PIG, 146 open, 262 Planned downtime, impact of, 72 open control of, 263-264 design practices for minimizing, 74-75 programing of, 262-263 example of, 72-74 PAD, see Personalized, adaptive, and dynamic Platform as a service (PaaS), 399 Painstaking process, 263 P leaf, 286 Partitioning strategies, 186 PLMN, see Public land mobile network Party interaction, 20 Plug-and-Play model (PnP model), 221 Passive optical networks (PONs), 229, 252 Pluggable optics, 271-272 PON-specific functions, 235 PMA, see Persistent management agent technology, 229-232 PMA Aggregator (PMAA), 233 Passive OSP, 231 PMO, see Present mode of operation Passive VM replication, 77 PNF, see Physical network functions Passive vProbe measurement data model, 378-379 pNICs, see Physical network interface cards Path Computation Element Protocol signaling (PCEP PnP model, see Plug-and-Play model signaling), 100, 285-286, 288, 355 Point of local repair, 281 PBX, see Private Branch Exchange Policy, 91, 93 PCI, see Peripheral component interconnect control VNF components, 320 PCIe device, see Peripheral component interconnect creation, 124, 125 express device decision and enforcement, 126-127 PCM AS, see Personal communication manager AS decision distribution, 124 PCRF, see Policy and charging 