User`s guide

GL-1
5100-A2-GB20-00
November 1996
Glossary
Asymmetric high-bit-rate Digital Subscriber Loop. Provides high-speed digital rates to a
customer premises, while supporting a lower speed in the reverse direction.
ADSL Termination Unit at the Remote (or customer premises) end of the local loop.
ADSL Termination Unit at the CO end of the local loop.
Central Office.
Customer Premises.
Customer Premises Equipment. Terminal equipment supplied by either the customer or
some other supplier, which is connected to the telecommunications network.
Central Processing Unit.
Cyclic Redundancy Check. A commonly used method of error detection.
Dual In-line Package switch.
Digital Subscriber Loop. The non-loaded, local-loop copper connection between the
customer and the first node within the network.
First In First Out. Specifies order of priority for queued entries.
High-bit-rate Digital Subscriber Loop. Provides high bandwidth, bi-directional transmission
over copper wire for both T1 and E1 services.
Worldwide interconnected networks that predominantly use the TCP/IP protocol.
Areas of memory your CPU uses to distinguish between the various peripheral devices
connected to your system when transferring or receiving data.
(Hardware) Interrupt Request. A signal used by your device to inform your CPU when it
wants to transfer or receive data.
Local Area Network. A network that spans a small geographic area (e.g., a building).
Light Emitting Diodes. Indicators on a device that usually show the status of a component.
LEDs may have three states: blinking, on or off.
Media Access Control address. Hardware address that identifies a card on a LAN.
Network Access System.
Plain Old Telephone Service.
Rate-adaptive Digital Subscriber Loop. Provides multi-speed symmetric data rates on the
local loop while maintaining existing POTS or BRI (Basic Rate Interface) on the same loop.
Transmission Control Protocol/Internet Protocol. The predominant protocol in the
worldwide Internet.
ADSL
ATU-R
ATU-U
CO
CP
CPE
CPU
CRC
DIP
DSL
FIFO
HDSL
Internet
I/O Base Address
IRQ
LAN
LEDs
MAC Address
NAS
POTS
RADSL
TCP/IP