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Cisco ATUC-4DMT-ISDN Line Card Installation and Configuration
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Acronyms and Terms
Cisco NI-2 Network Interface Processor Module
The “Cisco NI-2 Network Interface Processor Module” section on page 13 briefly describes the Cisco
NI-2 network interface processor module (see Figure 4 and Figure 5).
Acronyms and Terms
Table 3 defines the following terms that are used in this guide.
Table 3
Acronyms and Term Definitions
Acronym/Term
Definition
2B1Q
An ISDN line coding technique used in the USA and
Europe
4B3T
An ISDN line coding technique used in Germany
AAL5
ATM adaption Layer 5
ADSL
Asymmetric digital subscriber line
ANSI
American National Standards Institute
ATM
Asynchronous Transfer Mode
ATUC or ATU-C
Central office ADSL transceiver unit
CCO
Cisco Connection Online
CO
Central office
CPE
Customer premises equipment
DMT
Discrete multi-tone
DSB
Data serial bus
DSP
Digital signal processor
DSLAM
Digital subscriber line access multiplexer
DSL
Digital subscriber line
EMI
Electromagnetic interference
EPROM
Erasable programmable read-only memory
ESD
Electrostatic discharge
FAQ
Frequently asked questions
FCC
Federal Communications Commission
FPGA
Field programmable gate array
FTP
File Transfer Protocol
G.dmt
Standard that defines ADSL over splitter-coupled
interfaces.
GFR
Guaranteed frame rate
GND
Ground
HEC
Header error control
I/O
Input/output
