Key Terms
This chapter uses the following key terms. You can find the definitions in the Glossary.
service provider
point-to-point topology
hub-and-spoke topology
full mesh topology
dual-homed topology
leased line
T1
E1
hub
single-homed topology
voice over IP (VoIP)
broadband service
digital subscriber line (DSL)
dedicated lines
enterprise network
teleworking
virtual private networks (VPNs)
Telecommunications Industry Association (TIA)
Electronic Industries Alliance (EIA)
International Organization for Standardization (ISO)
Institute of Electrical and Electronics Engineers (IEEE)
Point-to-Point Protocol (PPP)
Frame Relay
Asynchronous Transfer Mode (ATM)
High-Level Data Link Control (HDLC)
customer premises equipment (CPE)
data communications equipment (DCE)
data terminal equipment (DTE)
demarcation point
local loop
last-mile
central office (CO)
toll network
dialup modem
modulates
demodulates
Access server
broadband modem
channel service unit/data service unit (CSU/DSU)
WAN switch
circuit-switched network
public switched telephone network (PSTN)
Integrated Services Digital Network (ISDN)
packet-switched network (PSN)
virtual circuit (VC)
data-link connection identifiers (DLCIs)
latency
jitter
private WAN infrastructure
public WAN infrastructure
broadband connections
Synchronous Optical Networking (SONET)
Synchronous Digital Hierarchy (SDH)
light-emitting diodes (LEDs)
dense wavelength division multiplexing (DWDM)
multiplex
E3
optical carrier (OC)
time-division multiplexed (TDM)
Basic Rate Interface (BRI)
Primary Rate Interface (PRI)
nonbroadcast multi-access (NBMA)
permanent virtual circuits (PVCs)
Metropolitan Ethernet (MetroE)
Ethernet over MPLS (EoMPLS)
Virtual Private LAN Service (VPLS)
Multiprotocol Label Switching (MPLS)
very small aperture terminal (VSAT)
DSL modem
DSL access multiplexer (DSLAM)
point of presence (POP)
cable modems (CM)
headend
cable modem termination system (CMTS)
municipal Wi-Fi
WiMAX
satellite Internet
3G/4G wireless
Long-Term Evolution (LTE)
teleworker
site-to-site VPNs
remote-access VPNs