|
ADSL |
Asymmetric Digital Subscriber Line |
|
ATM |
Asynchronous Transfer Mode (traditional packet switching technology) |
|
BWA |
Broadband Wireless Access |
|
CAM |
Leased line between the mainland and the Autonomous Regions of the Azores and Madeira |
|
xDSL |
Digital Subscriber Line (e.g. ADSL, SHDSL, HDSL) |
|
DWDM |
Dense Wavelength Division Multiplexing |
|
DTM |
Dynamic synchronous Transfer Mode traditional switching technology |
|
E |
Ethernet (10 Mbps) |
|
EC |
European Commission |
|
ECJ |
Court of Justice of the European Communities |
|
ECL |
Electronic Communications Law, Law No. 5/2004 of 10 February |
|
ECS |
Submarine Cable Station |
|
ERG |
European Regulators Group |
|
ETSI |
European Telecommunications Standards Institute |
|
Explanatory Note |
Annex to the EC Recommendation on relevant markets |
|
FE |
Fast Ethernet (100 Mbps) |
|
FR |
Frame Relay (traditional packet switching technology) |
|
FWA |
Fixed Wireless Access |
|
GE |
Gigabit Ethernet (1 Gbps) |
|
Gbps |
Gigabit per second (Billions of bits per second) |
|
Guidelines |
EC Guidelines on market analysis and the assessment of significant market power under the Community regulatory framework for electronic communications networks and services |
|
HDSL |
High-bitrate DSL |
|
IP |
Internet Protocol |
|
Kbps |
Kilobits per second (thousands of bits per second) |
|
Km.par |
Kilometres of optical fibre (fibre pair) |
|
LAN |
Local Access Network |
|
LE |
Local extension (terminating segment) |
|
LLRO |
Leased lines Reference Offer |
|
MS |
Main Section (trunk segment) |
|
NGN |
Next Generation Networks |
|
NGA |
Next generation access networks (next generation optical fibre access networks) |
|
NRA |
National Regulatory Authority |
|
Mbps |
Megabit per second (millions of bits per second) |
|
NTP |
Network Termination Point |
|
OSP |
Operator and provider of electronic communications services |
|
OSI |
Open System Interconnection |
|
PDH |
Plesiochronous Digital Hierarchy, technology preceding SDH (which has replaced it on transport networks), primarily used on access networks and lower speed lines (typically up to 2 Mbps) |
|
POP |
Point Of Presence |
|
RUO |
Reference Unbundling Offer |
|
SME |
Small or Medium Enterprise |
|
SMP |
Significant Market Power |
|
Recommendation |
Recommendation on Relevant Product and Service Markets, Electronic Communications, of the EC (2007) |
|
SDH |
Synchronous Digital Hierarchy, technology mostly used on transport networks, as well as on high-speed access networks (typically at speeds exceeding 2 Mbps) |
|
SDSL/SHDSL |
Symmetric High-Bitrate Digital Subscriber Loop (xDSL technologies which enable symmetrical connection of speed equal to or exceeding 2 Mbps over the copper network) |
|
SLA |
Service Level Agreement |
|
SoHo |
Small Office/Home Office. |
|
STM1 |
Synchronous Transfer Mode - Transporte SDH a 155 Mbps |
|
SSNIP |
Small but Significant Non-transitory Increase in Price |
|
TDM |
Time Division Multiplexing (traditional technology) |
|
UMTS |
Universal Mobile Telecommunications System |
|
VLAN |
Virtual Local Access Network |
|
VPN |
Virtual Private Network |
|
WLAN |
Wireless Local Area Network (may include FWA and BWA) |
