ZyXEL Communications PLA-470 V2 - V3.0.5 Guía de instalación descargar pdf (Pagina 343)

Security parameters (home PLC) (continued)

configuring, 228–230

firewall, 231–232

PLC gateway, 224–228

testing operation, 230–231

VPN and PPPoE, 232–235

Segment bursting, 53–54

Shared medium architecture, 24–27

analogy with network hub, 25, 26

PLC repeater concept, 25–27

private networks, 24–25, 26

public networks, 24, 25

See also Architecture

SHA (Secure Hash Algorithm), 71

Signal injectors, 141–142

Single-phase wiring, 160, 161–163

defined, 160

topology illustrations, 162

See also Three-phase wiring

SNMP (simple network management

protocol), 249–250

SoftPlug, 182

Speech packetization/depacketization, 109

Spidcom, 128

Spoofing attacks, 72

Standardization

consortiums and associations, 8–10

IEEE, parties involved in, 11

parties involved in, 7

towards, 10

Standards

company, 5

consortium, 5

de facto, 3

defined, 2, 3

government, 5–6

IEEE, future, 10

industry, 5

interoperability, future, 10

organizations, 2–4

types of, 4–8

voluntary, 4

Streaming, 112

Symmetric-key cryptography, 62–63

Synchronization

frame controls and, 49–51

HomePlug AV frames, 50–51

T

TCP/IP parameters, 243–245

of board via ipconfig, 245

configuring, 243

of LAN Ethernet board, 244

Telephone PLC modems, 139–140

Telephony over PLC, 108–114

capacity problems, 113–114

differentiating IP packets, 110–111

hi-fi quality, 111

speech packetization/depacketization, 109

streaming, 112

transit time, 110

video, 112

video routing rates, 113

Three-phase wiring, 160, 163–164

defined, 160

topology illustration, 163

See also Single-phase wiring

Throughput

calculation, 171–175

HomePlug Turbo PLC, 223

telephony, 223

Time division multiple access (TDMA), 13

beacon frames, 51

medium access in HomePlug AV and, 44

slots, 51

timeslots, 115

Tone map management, 52–53

Topology, 160–168

building dense urban area, 279

choosing, 167–168

electrical network, 275–276

LV network, 276–277, 281

mesh, 277

MV network, 276–277

ring, 277

security, 258–259

single-phase wiring, 160, 161–163

star, 276

three-phase wiring, 160, 163–164

Transfer time, 172

Transformers, 144

defined, 143

overriding, 144

Transit time, 110

Transmission channel

ARQ, 45–49

contention-free access, 53

CSMA/CA techniques, 38–45

defined, 38

frame priority management, 51–52

frequency channel management, 52–53

functionalities, 38–54

medium access, 38–45

324 Index

1 2 ... 338 339 340 341 342 343 344 345 346 347 348 349

Comentarios a estos manuales

Sin comentarios