Appendix C: Glossary - Planet VDR-300NU User Manual

User Manual of VDR-300NU

Appendix C: Glossary

Address mask
A bit mask select bits from an Internet address for subnet addressing. The mask is 32 bits long and
selects the network portion of the Internet address
and one or more bits of the local portion. Sometimes it called subnet mask.
VDSL
VDSL2 (Very High-Bit-Rate Digital Subscriber Line 2), G.993.2 is the newest and most advanced
standard of xDSL broadband wire line communications.
ADSL
Asymmetric digital subscriber line
AAL5
ATM Adaptation Layer - This layer maps higher layer user data into ATM cells, making the data suitable
for transport through the ATM network.
ATM
Asynchronous Transfer Mode - A cell-based data transfer technique in which channel demand
determines packet allocation. ATM offers fast packet technology,
real time, and demand led switching for efficient use of network resources.
AWG
American Wire Gauge - The measurement of thickness of a wire
Bridge
A device connects two or more physical networks and forward packets between them. Bridges can
usually be made to filter packets, that is, to forward only certain traffic. Related devices are repeaters
which simply forward electrical signals from one cable to the other and full-fledged routers which make
routing decisions based on several criteria.
Broadband
Characteristic of any network multiplexes independent network carriers onto a single cable. Broadband
technology allows several networks to coexist on one single cable; traffic from one network does not
interfere with traffic from another. Broadcast a packet delivery system where a copy of a given packet is
given to all hosts attached to the network. Example: Ethernet.
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