Acronyms
AAL
ABM
application adaptation layer
asynchronous balanced mode
BECN backward explicit congestion
notification
ABR
available bit rate BER
AC
access control
ACK
acknowledgment BOOTP bootstrap protocol
ADSL
asymmetric digital subscriber line BRI
AM
amplitude modulation
BSC
binary synchronous communication
AMI
alternate mark inversion
BUS
broadcast/unknown server
ANSI
American National Standards Institute
ARM
asynchronous response mode
CBR
constant bit rate
ARP
address resolution protocol
CDV
cell delay variation
basic encoding rule
BLAST blocked asynchronous transmission
CAP
ARPA Advanced Research Project Agency CER
ARPANET
basic rate interface
carrierless amplitude/phase
cell error ratio
Advanced Research Project Agency CGI
common gateway interface
Network CHAP Challenge Handshake Authentication
ARQ
automatic repeat request
ASCII
American Standard Code for
CIR
Information Interchange
CLNS
connectionless network service
amplitude shift keying
CLR
cell loss ratio
ASK
Protocol
committed information rate
ASN.1 abstract syntax notation 1 CLTS
connectionless transport service
ATM
Asynchronous Transfer Mode
CMIP
AUI
attachment unit interface
B-ISDN broadband ISDN CMIS
BVS
bipolar 8-zero, substitution
BCC
block check count
common management information
protocol
common management information
service
CMISE common management information
service element
CONS
connection-oriented network service
EOT
end of transmission
COTS
connection-oriented transport service
FCC
Federal Communications Commission
CRC
cyclic redundancy check
FCS
frame check sequence
CS
convergence sublayer
FDDI
fiber distributed data interface
CSMA
carrier sense multiple access
FDM
frequency-division multiplexing
CSMA/CD
carrier sense multiple access with
FECN
forward explicit congestion
collision detection
notification
CSU
channel service unit
FM
frequency modulation
CTD
cell transfer delay
FRAD
Frame Relay assembler/disassembler
CVDT
cell variation delay tolerance
FSK
frequency shift keying
DAC
dual attachment concentrator
FTAM
file transfer, access, and management
DAS
dual attachment station
FTP
file transfer protocol
DC
direct current
FTTC
fiber to the curb
DCE
data circuit-terminating equipment
GFI
general format identifier
DDS
digital data service
HDB3
high-density bipolar 3
DES
data encryption standard
HDLC
high-level data link control
DHCP
dynamic host configuration protocol
HDSL
high bit rate digital subscriber line
DIB
directory information base
HF
high frequency
DLCI
data link connection identifier
HTML
HyperText Markup Language
DMT 1 T
discrete multitone technique
HTTP
HyperText Transfer Protocol
DNS
Domain Name System
ICMP
internet control message protocol
DPSK
differential phase shift keying
IDN
integrated digital network
DQDB
distributed queue dual bus
WEE
Institute of Electrical and Electronics
DS
directory service
DSA
directory system agent
IGMP
internet group message protocol
DSL
digital subscriber line
IP -
Internetworking Protocol
DSU
digital service unit
IPCP
Internetwork Protocol Control
DSU/CSU
digital service unit/channel service
unit
Engineers
Protocol
IPng
IP next generation
DTE
data terminal equipment
ISDN
integrated services digital network
DUA
directory user agent
ISO
International Standards Organization
EHF
extremely high frequency
ISOC
InterNET Society
EIA
Electronics Industries Association
ITU-T
International Telecommunications
union-Telecommunication
EMI
electromagnetic interference
ENQ/ACK
enquiry/acknowledgment
Standardization Sector
JPEG
joint photographic experts group
MTSO
mobile telephone switching office
LAN
local area network
MTU
maximum transfer unit
LANE
local area network emulation
NAK
negative acknowledgment
LAP
link access procedure
NCP
Network Control Protocol
LAPB
link access procedure, balanced (or for
NIC
network interface card
NNI
network-to-network interface
B channel)
LAPI)
link access procedure for D channel
NRM
normal response mode
LAPM
link access procedure for modems
NRZ
nonreturn to zero
LCN
logical channel number
NRZ-1
nonretum to zero, invert
LCP
Link Control Protocol
NRZ-L
nonreturn to zero, level
LEC
LANE client
NT1
network termination 1
LED
light-emitting diode
NT2
network termination 2
LES
LANE server
NW
network virtual terminal
LF
low frequency
OC
optical carrier
LLC
logical link control
OSI
Open Systems Interconnection
LMI
local management information
P/F
poll/final
LRC
longitudinal redundancy cheek
PAD
packet assembler/dissembler
LSP
link state packet
PAM
pulse amplitude modulation
LZW
Lempel-Ziv-Welch
PAP
Password Authentication Protocol
MA
multiple access
PBX
private branch exchange
MAC
medium access control
PCM
pulse code modulation
MAN
metropolitan area network
PCR
peak cell rate
MAU
multistation access unit or medium
PDU
protocol data unit
attachment unit
PLP
packet layer protocol
MCR
minimum cell rate
PM
phase modulation
MF
middle frequency
POP
Post Office Protocol
MHS
message handling system
PPP
Point-to-Point Protocol
MIB
management information base
PRI
primary rate interface
MIC
media interface connector
PSK
phase shift keying
MIME
Multipurpose Internet Mail Extension
PSTN
Public Switched Telephone Network
MPEG
motion picture experts group
PTI
packet type identifier
MTA
message transfer agent or mail transfer
PVC
permanent virtual circuit
QAM
quadrature amplitude modulation
agent
MTS
message transfer system
QOS
quality of service
TE2
RADSI, rate adaptive asymmetrical digital
subscriber line
TEI
TELNET
terminal equipment 2
terminal equipment identifier
Terminal Network
RARP
reverse address resolution protocol TFTP
RIP
routing information protocol
RSA
Rivest, Shamir, Adleman
Trivial File Transfer Protocol
TP
transmission path
TPDU
transport protocol data unit
RZ
return to zero
TSI
SAPI
service access point identifier
TTL
SAR
segmentation and reassembly
UA
SAS
single attachment station
UBR
SCR
sustained cell rate
UDPU
SDH
synchronous digital hierarchy
UHF
ultrahigh frequency
SMC
synchronous data link control
UNI
user-to-network interface
SDSL
symmetric digital subscriber line
URL
uniform resource locator
SFD
start frame delimiter
UTP
SHF
superhigh frequency
VBR
SIP
SLIP
time-slot interchange
time to live
user agent
unspecified bit rate
ser Datagram Protocol
unshielded twisted-pair
variable bit rate
SMDS interface protocol VBR-NRT
variable bit rate nonreal time
Serial Line Internet Protocol
VBR-RT
variable bit rate real time
SMDS switched multimegabit data service VC
SMI
structure of management information
SMTP Simple Mail Transfer Protocol
virtual circuit
VG
VDSL
virtual circuit identifier
very high bit rate digital subscriber line
SNMP Simple Network Management Protocol
SONET Synchronous Optical Network
SPDU
session protocol data unit
STM
synchronous transport module
STP
VHF
VLF
synchronous transport signal
switched virtual circuit
TA
terminal adapter
TCP
Transmission Control Protocol
TE1
Voice Over Frame Relay
VP
virtual path
VPI
VPI/VCI
virtual path identifier
virtual path identifier/virtual channel
identifier
VRC
TCP/IP Transmission Control Protocol/
TDM
very low frequency
VOFR
shielded twisted-pair
STS
SVC
very high frequency
vertical redundancy cheek
VT
virtual terminal or virtual tributary\
Internetworking Protocol
WAN
wide area network
time-division multiplexing
WDM
wave-division multiplexing
terminal equipment 1
WWW
World Wide Web