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| KEY |
IPv4
Version relevant to Internet Protocol V4
IPv6 Version relevant to Internet Protocol V4
MIB Document defines the Management information base (MIB) for
the protocol, interface or other network element, usually according
to the Structure of Management Information version 2 (SMIv2)
MOs Document defines managed objects for the protocol, interface
or other network element
V Version number
V1-V2 Covers compatibility issues between different versions
of a given function or protocol |
| |
| ABBREVIATION
FULL FORM AND REFERENCES |
| A |
3270 IBM 3270 (a data terminal device) (SNA)
A Anchor tag (HTML)
B Bold tag (HTML)
BR Break tag (HTML)
DD Definition Description tag (HTML)
DL Definition List tag (HTML)
DT Definition Term tag (HTML)
HR Horizontal Rule tag (HTML)
I Italic tag (HTML)
LI List tag (HTML)
OL Ordered List tag (HTML)
P Paragraph tag (HTML)
tag HTML TAG
TT TeleType tag (HTML)
UL Unordered List tag (HTML)
0x prefix for number value coded in hexadecimal
10/100baseT ethernet LAN with autosensing between
10 Mbit/s and 100 Mbit/s
1000baseT 1 Gbit/s (Gigabit) ethernet LAN over
twisted pair cabling IEEE 802.3z
1000baseX Gigabit ethernet LAN
100baseT 100 Mbit/s fast ethernet LAN over
twisted pair cabling IEEE 802.3u
10baseT 10 Mbit/s ethernet LAN over twisted
pair cabling IEEE 802.3i
1822L host access protocol, ARPANET host-to-IMP
interface RFC 0802, RFC 0851, RFC 0878
1VF One voice frequency (signalling)
2VF Two voice frequency (signalling)
2 w 2-wire
3270 protocol Protocol used
to terminal (IBM SNA)
3DES Triple Defense Encryption Standard RFC
1851
3DESE PPP Triple-Defense Encryption Standard
Encryption protocol RFC 2420, RFC 3217
4B/5B 4 Binary coded as 5 Binary (a block code)
4B3T 4-Binary 3-Tertiary (ISDN line code)
4D-PAM5 a block code
4-FSK 4-state (quarternary) Frequency Shift
Keying (digital modulation)
4 w 4-wire
6Bone Backbone network for IPv6 RFC 2546, RFC
2772, RFC 2921
8B/10B 4 Binary coded as 10 Binary (a block
code)
8B/6T 8 Binary coded as 6 Tertiary (a block/line
code)
A Agent
A Applicable
A ASCII (FTP)
A hexadecimal digit value equal to decimal
'10'
A Offered traffic in Erlangs
A/D Analogue-to-Digital conversion
A+S Alarm and state management
A = Administrative domain (X.500)
AA Administrative Authority (numbering)
AAA Authentication, Authorisation and Accounting
RFC 2903-6, RFC 2977 (Mobile IP), RFC 2989, RFC 3127, RFC 3141
AAA Autonomous Administrative Area
AAI Administration Authority Identifier
AAL ATM Adaptation Layer
AAL1 AAL service type 1 (constant bit rate
service)
AAL2 AAL service type 2 (variable bit rate,
but time critical service)
AAL3/4 AAL service type 3/4 (class C frame
relaying service or class D connectionless service)
AAL5 AAL service type 5 RFC 2364
AAL-IE AAL Information Element
AAR Automatic Alternative Routing
AARP Appletalk Address Resolution Protocol
ABM Asynchronous Balanced Mode (HDLC)
ABNF Augmented Backus-Naur-Form RFC 2234
ABOR ABORt (FTP)
ABR Area Border Router
ABR Available BitRate (ATM)
ac Ascension Island
AC Access Concentrator (PPPoE) RFC 2516
AC Access control (IBM token ring LAN)
AC Alternating current
ACAP Application Configuration Access Protocol
RFC 2244
ACB Access method Control Block (IBM VSAM or
VTAM)
ACCT ACCounT (FTP)
ACD Automatic Call Distribution
ACE Access Connection Element
ACF Access Control Field (DQDB)
ACF Advanced Communication Function (IBM SNA)
ACFC Address-and-Control-Field-Compression
(PPP) RFC 1661
ACI Access Control Information
ACK Acknowledgement message
ACL ACcess List RFC 1009, RFC 1716, RFC 1812
ACR Available Cell Rate
ACSE Association Control Service Element (OSI
layer 7)
ad Andorra
AD Administrative Domain RFC 1136
ADC Advice of Duration and Charge
ADDMD Administration Directory Domain
ADM Add/Drop Multiplexor (SDH/SONET)
ADMD Administration management domain (X400)
ADPCM Adaptive Differential Pulse Code Modulation
(low bitrate speech)
ADS Active Directory Service (Microsoft Windows)
ADSL Asymmetric Digital Subscriber Line RFC
2662 (MOs)
ADSP Appletalk Data Stream Protocol (Appletalk)
adspec Advertising SPECification (RSVP) RFC
2205
ae United Arab Emirates
AE Application Entity (OSI layer 7)
AEP Appletalk Echo Protocol (Appletalk)
aero AEROnautical and air-transport industry
Internet domain
AES Advanced Encryption Standard (Rijndael
code) FIPS-197, RFC 3268
af Afghanistan
AF Assured Forwarding PHB group (differential
services) RFC 2597
AFI Address Format Identifier or Authority
and Format Identifier (numbering)
AFP Appletalk Filing Protocol (Appletalk)
AFT Authenticated Firewall Traversal
ag Antigua and Barbuda
AgentX Agent eXtensibility protocol RFC 2257
(v1), RFC 2741 (v1)
AH IP Authentication Header RFC 1826, RFC 2402
AHIP ARPANET Host Interface Protocol RFC 1005
ai Anguilla
AII Active Input Interface (optical fibre)
AIM ATM Inverse Multiplexing
AIS Alarm Indication Signal (digital transmission
systems)
al Albania
AL Access Link
AL Alignment (AAL3/4 CPCS)
A-law PCM speech encoding (European standard)
ALG Application Level Gateway
ALLO ALLOcate (FTP)
am Armenia
AM Accounting management
AM Amplitude Modulation
AMI Alternate Mark Inversion (line code)
AMPS Advanced Mobile telePhone System (American
cellular radio)
AMR Adaptive Multi-Rate audio codec RFC 3267
AMR-WB Adaptive Multi-Rate Wide Band audio
codec RFC 3267
AMS Audio visual Multimedia Services
AMSIX AMSterdam Internet eXchange (Internet
exchange \& peering point)
an Netherlands Antilles
AN Access Network or Node
AN Auto-Negotiation
ANA Article Numbering Association (UK)
ANI Automatic Number Identification (US equivalent
of CLI)
ANS American National Standard
ANSI American National Standards Institute
www.ansi.org
anycast host Anycasting service RFC 1546
ao Angola
AO Abort Output (NVT-ASCII)
AOI Active Output Interface (optical fibre)
AOL America OnLine
AOW Asia-Oceania Workshop (conformance testing
body)
AP Access Point (WLAN) IEEE 802.11
AP Acknowledgement Packet
AP Application Process
APDU Application Protocol Data Unit
APEX Application EXchange RFC 3340-2
API Application Programming Interface
APL RR Address Prefix Lists---Resource Record
RFC 3123
APNIC Asia Pacific Network Information Centre
www.apnic.net
APOP mailbox name and message digest (POP)
APP APPlication specific function (RTCP) RFC
1889
APPC Advanced Program-to-Program Communication
(IBM SNA LU6.2 RFC 2051 (MOs)
APPE APPEnd (FTP)
APPL APPLication program
APPN Advanced Peer-to-Peer Networking (IBM)
RFC 2155 (MOs), RFC 2455-7 (MOs)
APS Automatic Protection Switching
aq Antarctica
ar Argentina
AR Access Router
ARC Alarm Reporting Capability
ARCFOUR RC-4 encryption algorithm (Internet
draft)
ARCNET Attached Resource Computer NETwork RFC
1051, RFC 1201, RFC 2497 (IPv6)
ARE All Routes Explorer
AREQUIPA Application REQUested IP over ATM
RFC 2170
ARIN American Registry for Internet Numbers
www.arin.net
ARL Adjusted Ring Length
ARP Address Resolution Protocol RFC 0826, RFC
1027
arpa Address and Routing Parameter Area Internet
domain RFC 3172
ARPA Advanced Research Projects Agency RFC
0961
ARPANET Advanced Research Projects Agency NETwork
RFC 0008
ARQ Automatic Repeat reQuest RFC 3366
ARR Automatic Repeat Request
ARR Automatic Re-Routing
ARS Address Resolution Server
ARS Automatic Route Selection
as American Samoa
AS Autonomous System RFC 1812, RFC 1930 (AS
number allocations), RFC 1965, RFC 2270, RFC 3065, RIPE-109
(application form)
ASBR Autonomous System Border Router
ASC Accredited Standards Committee
ASCII American Standard Code for Interchange
of Information RFC 0020, ANSI X3.4-1968, ANSI X3.110-1983, ANSI
X3.4-1986, ISO 8859, ISO 14962 (1997)
ASE Application Service Element (OSI layer
7)
ASIC Application-Specific Integrated Circuit
ASK Amplitude Shift Keying (digital modulation)
ASM Any Source Multicasting
ASN.1 Abstract Syntax Notation 1 ISO 8824 \&
5, ITU-T X.208-9, ITU-T X.680-3, ITU-T X.690
ASO Application Service Object
ASP Appletalk Session Protocol (Appletalk)
at Austria
AT\&T American Telephone and Telegraph
company
ATCP AppleTalk Control Protocol (PPP) RFC 1378
ATE ATM Terminating Equipment
ATM Asynchronous Transfer Mode ITU-T I.113,
ITU-T I.121, ITU-T I.150, ITU-T I.211, ITU-T I.311, ITU-T I.327,
ITU-T I.361, RFC 1695 (MOs)
ATMARP Asynchronous Transfer Mode Address Resolution
Protocol RFC 2601
ATME Automatic Transmission, Measuring and
signalling test Equipment
ATM-LE Asynchronous Transfer Mode---Layer Entity
ATMM ATM Management
AtmMIB Asynchronous Transfer Mode objects (mib-2)
RFC 1694
ATMP Ascend Tunnel Management Protocol RFC
2107
ATO Adaptive Time-Out
ATP Appletalk Transaction Protocol (Appletalk
layer 4)
ATS Abstract Test Suite
au Australia
AU Administrative Unit (SDH/SONET)
AuC Authorisation Centre
AUG Administrative Unit Group (SDH/SONET)
AUI Attachment Unit Interface (ethernet LAN)
IEEE 802.3
AUTH Authentication/Authorise command RFC 1734,
RFC 2095, RFC 2195
AUU ATM layer User-to-User indication
AVI Audio Video Interleaved file format RFC
2361
AVI AudioVisual Interactive service
AVMMS Audio-Visual MultiMedia Service
AVP Attribute Value Pair
aw Aruba
AW Administrative Weight
AWG American Wired Gauge (cable size)
Awnd Allowed WiNDow (TCP) RFC 2581
AYT Are You There ? (NVT-ASCII)
az Azerbaijan |
| B |
B
Erlang lost-call probability
B hexadecimal digit value equal to decimal
'11'
B suffix for number value coded in binary
B Block mode (FTP)
B8ZS Bipolar 8-Zero Substitution (line code)
ba Bosnia and Herzegovina
BA Behaviour Aggregate (Differentiated Services)
RFC 2475
BABT British Approvals Board for Telecommunications
BACP Bandwidth Allocation Control Protocol
(PPP) RFC 2125
BAKOM Bundesamt f\"{u}r Telekommunikation
(Switzerland)
balanced A type of data transmission using
coaxial cable (usually 75 ohm)
Balun BALance-to-Unbalance transformer
BAP Bandwidth Allocation Protocol (PPP) RFC
2125
BAPT Bundesamt f\"{u}r Post und Telekommunikation
(Germany)
BAS Bitrate Allocation Signal
BASize Buffer Allocation SIZE (AAL 3/4 CPCS)
BAT Bridge Address Table
bb Barbados
BB BaseBand
B-BC Broadband bearer capability
BBN (Richard)Bolt, (Leo) Beranek and (Robert)
Newman (data switch manufacturer)
Bc Committed burst size (frame relay)
bcc Blind Carbon Copy (SMTP)
BCC Bearer Channel Connection protocol
BCC Block Check Character
BCD Binary-Coded Decimal
BCDBS Broadband Connectionless Data Bearer
Service
B-channel Bearer Channel
BCN Backward Congestion Notification
BCOB Broadband Connection-Oriented Bearer (service)
BCP Best Current Practice
BCP Bridging Control Protocol (PPP) RFC 1638,
RFC 2878
BCS Block Check Sequence
bd Bangladesh
BDAT Binary DATa (SMTP)
BDR Back-up Designated Router (OSPF)
be Belgium
Be Excess burst duration (frame relay)
BECN Backward Explicit Congestion Notification
(frame relay)
BEDC Block Error Detection Code (ATM OAM performance
cell)
BEEP Blocks Extensible Exchange Protocol RFC
3080, RFC 3081, RFC 3288
BEL Bell (see ASCII)
BER Basic Encoding Rules
BER Bit Error Ratio
BERT Bit Error Rate Tester
bf Burkina Faso
BFTP Background File Transfer Program RFC 1068
bg Bulgaria
BGMP Border Gateway Multicast Protocol
BGP Border Gateway Protocol RFC 1105 (v1),
RFC 1163 (v2), RFC 1164, RFC 1267 (v3), RFC 1268, RFC 1269 (MOs),
RFC 1364, RFC 1397, RFC 1403, RFC 1654-7 (v4), RFC 1745, RFC
1771-4 (v4), RFC 1863, RFC 1965-6, RFC 1997-8, RFC 2042, RFC
2283, RFC 2439, RFC 2545-7, RFC 2796, RFC 2842, RFC 2858, RFC
2918, RFC 3065, RFC 3107, RFC 3345
BGP-ASC Autonomous System Confederations for
BGP RFC 3065
bh Bahrain
bi Burundi
B-ICI Broadband Inter-Carrier Interface (ATM)
BID Bridge Identity IEEE 802.1d
BIND Berkeley Internet Name daemon
BIP Bit Interleaved Parity code (block error
detection code)
BIS Border Intermediate System
BIS Bringing Into Service
BIS Bump-In-the-Stack technique RFC 2767
B-ISDN Broadband Integrated Services Digital
Network ITU-T I.121
BISSI Broadband Inter-Switching System Interface
B-ISUP Broadband Integrated Services User Part
Bisync IBM protocol (BSC)
bit/s Bits per second
BIU Basic Information Unit (IBM SNA)
biz Business Internet domain
bj Benin
BLER BLock Error Rate
block A unit of data information consisting
of a header and an information field
bm Bermuda
BML Business Management Layer (ISO management
model) ITU-T M.3000
BMPT Bundesministerium f\"{u}r Post und
Telekommunikation (Germany)
bn Brunei Darussalam
BN Bridge Number
BNC BayoNet Connector
BNF Backus-Naur Form
BNN Boundary Network Node
BNS Backus-Naur Form RFC 2205
B-NT Network Termination for B-ISDN
B-NT1 Network Termination 1 for B-ISDN
B-NT2 Network Termination 2 for B-ISDN (multipoint
configuration)
bo Bolivia
BOC Bell Operating Company (USA)
BOM Beginning Of Message
BOOTP BOOTstrap Protocol RFC 0906, RFC 0951,
RFC 1048, RFC 1084, RFC 1395, RFC 1497, RFC 1532-4, RFC 1542,
RFC 2132
BOP Bit-Oriented Protocol
BPDU Bridge Protocol Data Unit IEEE 802.1d
BPON Broadband Passive Optical Network
BPP Bridge Port Pair (service routing descriptor)
BPSK Binary Phase Shift Keying (modulation)
br Brazil
BR Backbone Router
BRA Basic Rate Access (ISDN)
BRI Basic Rate Interface (ISDN) ITU-T I.420,
ITU-T I.430 (physical layer), ITU-T I.441 (datalink layer),
ITU-T Q.921 (datalink layer), ITU-T I.451 (network layer), ITU-T
Q.931 (network layer)
BRK BReaK (NVT-ASCII)
BRL Balance Return Loss
Brouter Combination Bridge and ROUTER
bs Bahamas
BS BackSpace (see ASCII)
BS Base Station (mobile telephone network)
BSC Base Station Controller (mobile telephone
network)
BSC Binary Synchronous Communication (IBM)
BSD Berkeley Software Distribution RFC 1258,
RFC 1977, RFC 3164
BSI British Standards Institution
BSN Block Sequence Number
B-STP B-ISDN signalling point
BSS Base Station Sub-system (mobile telephone
network)
BSS Basic Service Set (WLAN) IEEE 802.11
BSSID Basic Service Set Identifier (WLAN) IEEE
802.11
B-STP B-ISDN signalling transfer point
bt Bhutan
BT British Telecommunications plc
B-TA Terminal Adaptor for B-ISDN
Btag Beginning TAG (AAL3/4 CPCS)
BTAM Basic Telecommunications Access Method
BTC empirical Bulk Transfer Capacity metrics
RFC 3148
B-TE Terminal Equipment for B-ISDN
B-TE1 B-ISDN Terminal Equipment type~1 (designed
for ATM)
B-TE2 B-ISDN Terminal equipment type~2 (connected
via B-TA)
BTS Base Transmitter Station (mobile telephone
network)
BTx Bildschirmtext (Deutsche Telekom name for
videotext)
BUS Broadcast and Unknown Server
bv Bouvet Island
BVCP PPP Banyan Vines Control Protocol RFC
1763
BVPS Broadband Virtual Path Services
bw Botswana
by Belarus
BYE end of participation, logout or quit command
bz Belize |
| C |
C
Capacitance
C Carriage control (FTP)
C Characteristic
C Compressed mode (FTP)
C Conditional
C Control leads ITU-T X.21
C hexadecimal digit value equal to decimal
'12'
C/I Carrier to Interference ratio (radio)
C/R Command / Response
C = Country identification (X.500)
C-4 Container-4 (149.76 Mbit/s) (SDH/SONET)
ca Canada
CA Certificate Authority (PKI) ITU-T X.509
CAC Channel Access Control
CAC Connection Admission Control (ATM)
CAD Computer Aided Design
CAD-CAM Computer Aided Design / Computer Aided
Manufacturing
CAI Computer assisted instruction
CALS Continuous Acquisition and Life-cycle
Support industry steering group RFC 1895
CALSCH CALendaring and SCHeduling
CAN CANcel (see ASCII)
CAP Carrierless Amplitude modulation / Phase
modulation
CAPA CAPAbilities (POP)
CAPI Communications Application Program Interface
(Microsoft)
CAPI Cryptography Application Program Interface
CARP Cache Array Routing Protocol RFC 3040
CAS Channel Associated Signalling (telephony)
CAS Communication Applications Specification
API (fax modem API)
CASE Common Application Service Element
CAST Cryptogaphic Algorithm using STrict avalanche
criterion RFC 2144 (CAST-128), RFC 2612 (CAST-256), RFC 2984
CAT Common Authentication Technology
Cat.5 Category 5 twisted pair cable EIA/TIA
568
Cat.6 Category 6 twisted pair cable EIA/TIA
568
Cat.7 Category 7 twisted pair cable EIA/TIA
568
CATNIP Common ArchiTecture for the Internet
RFC 1707
CBC Cypher Block Chaining (DES encryption standard)
RFC 1829, RFC 2040, RFC 2451
CBCP CallBack Control Protocol (PPP)
CBDS Connectionless Broadband Data Service
C-bit Checksum bit (GRE) RFC 1701
CBO Continuous Bit stream-Oriented
CBR Constant Bit Rate (ATM)
CBT Core Based Trees RFC 2189, RFC 2201
cc Carbon Copy (SMTP)
cc Cocos (Keeling) Islands
CC CSRC count (contributing source count, RTP)
RFC 1889
CCA Clear Channel Assessment (WLAN carrier
sensing function) IEEE 802.11
CCA Commercial Certificate Authority ITU-T
X.509
CCD Charge coupled device
CCD Contract Completion Date
C-channel Communication channel
CCIR International radiocommunication consultative
committee (now ITU-R - the radiocommunication sector of ITU)
CCIS Common Channel Interoffice Signalling
CCITT International Telephone and Telegraph
Consultative Committee (now renamed ITU-T)
CCP Compression Control Protocol (PPP) RFC
1962
CCR Commitment, Concurrency and Recovery services
(OSI layer 7)
CCS Common Channel Signalling
CCS Console Communication Service (IBM SNA)
CCSO Computing and Communications Services
Office (Univ. of Illinois) RFC 2378
ccTLDs Country Code Top-Level Domains ISO 3166-1,
www.iana.org/cctld/cctld.htm
CCU Communications Control Unit
CCW Channel Command Word (IBM ESCON)
cd Democratic Republic of the Congo
CD Collision Detection
CD CountDown counter (DQDB)
CDDI Copper Distributed Data Interface
CDLC Cellular Data Link Control
CDMA Code Division Multiple Access RFC 3141
(AAA)
CDN Call-Disconnect-Notify (L2TP) RFC 2661
CDS Common Directory Service
CDUP Change to Parent Directory (FTP)
CDV Cell Delay Variation (ATM)
CDVT Cell Delay Variation Tolerance (ATM)
CE Connection Element
CE Connection Endpoint
CE Customer Edge router (MPLS) RFC 2917
CEC Cell Error Control (physical layer)
CEI Connection Endpoint Identifier
CellB Sun Microsystems video encoding RFC 2029
CELP Code Excited Linear Predication (low bitrate
audio) ITU-T G.723
CEN Comit\'{e} Europ\'{e}en de Normalisation
CEP Connection EndPoint
CEPT European Conference for Posts and Telecommunications
CEQ Customer Equipment
CER Cell Error Ratio (ATM)
CES Circuit Emulation Service
CES Connection Endpoint Suffix
cf Central African Republic
CF Contention Free (WLAN protocol) IEEE 802.11
CFCCH Compact Frequency Correction burst CHannel
(EDGE)
CFDP Coherent File Distribution Protocol RFC
1235
CFI Canonical Form Identifier IEEE 802.1q
CGI Common Gateway Interface or Common Gate
Interface
ch Switzerland
chaddr Client Hardware ADDRess (BOOTP/DHCP)
RFC 0951
CHAP CHAllenge handshake Protocol (PPP) RFC
1994, RFC 2433, RFC 2759, RFC 2484
CHARGEN CHARacter GENerator protocol RFC 0864
CHPID CHannel Path IDentifier (IBM ESCON)
ci Cote d'Ivoire
CI Congestion Indication
CI Company Identifier
ciaddr Client IP ADDRess (BOOTP/DHCP) RFC 0951
CIC Circuit Identification Code
CICS Communication Information Control System
(SNA)
CID Communication IDentifier (IBM VTAM)
CID Context Identifier RFC 3095
CIDR Classless Inter-Domain Routing RFC 1517-20,
RFC 1817
CIFS Common Internet File System (Microsoft
Networking)
CIM Common Information Model RFC 3060
CIM Computer Integrated Manufacturing
CIP Common Indexing Protocol RFC 2651-6
CIPX Compressing IPX headers over WAN media
RFC 1553
CIR Committed Information Rate (frame relay)
ITU-T Q.922
ck Cook Islands
cl Chile
CL ConnectionLess
Clav Cell available (flow control)
CLEC Competitive Local Exchange Carrier
CLI Calling Line Identity
CLI Command Line Interface
CLI ConnectionLess Internetworking
CLIP Calling Line Identity Presentation
CLIR Calling Line Identity Restriction
Clk Clock
CLLM Consolidated Link Layer Management (FR)
CLNAP ConnectionLess Network service Access
Protocol
CLNES Controlled-Load Network Element Service
(QOS and RSVP) RFC 2211-2, RFC 2381 (ATM)
CLNP ConnectionLess Network Protocol RFC 1526,
RFC 1561, RFC 1575, ISO 8473
CLNS ConnectionLess Network Service RFC 0926,
RFC 0986, RFC 0994, RFC 1069, RFC 1162, RFC 1238 (MIB), RFC
1240 ISO 8473
CLP Cell Loss Priority bit (ATM)
CLR Cell Loss Ratio (ATM)
CLS Controlled-Load network element Service
(QOS and RSVP) RFC 2211-2, RFC 2381 (ATM)
CLSF ConnectionLess Service Function
CLTP ConnectionLess Transport Protocol
CLTS ConnectionLess Transport Service
CLU Control Logical Unit (IBM)
cm Cameroon
CM Configuration Management RFC 3139
CME Common Management Environment
CME Connection Management Entity
CMI Coded Mark Inversion (line code)
CMIP Common Management Information Protocol
RFC 1095, RFC 1189
CMIS Common Management Information Service
RFC 1095, RFC 1189
CMISE Common Management Information Service
Entity
CMOL CMIP Over LLC (Logical Link Control)
CMOT CMIS \& CMIP over TCP/IP RFC 1095,
RFC 1189
CMR Cell Misinsertion Rate (ATM)
CMS Content Management Software (web authoring
software)
CMS Cryptographic Message Syntax RFC 2315,
RFC 2630, RFC 2797, RFC 2984, RFC 3058, RFC 3185, RFC 3211,
RFC 3218, RFC 3274, RFC 3278, RFC 3369-70
CMT Connection management mechanism (FDDI)
cn China
CN Congestion Notification
C-n Container of bitrate order n (SDH)
CNAME Canonical NAME (DNS) RFC 1035
CNLS CoNnectionLeSs
CNRP Common Name Resolution Protocol RFC 3367-8
co Colombia
CO Central Office (local public telephone exchange)
CO Connection-Oriented
CO&M Centralised Operation and Maintenance
COBS Consistent Overhead Byte Stuffing
CODEC COder/DECoder
COH Connection OverHead
COI Connection-Oriented Internetworking
COLT City of London telecommunications (network
operator)
com COMmercial Internet domain
COM Continuation Of Message
CON CONcentrator
Conf Confirm
CONS Connection-Oriented Network Service
COOKIE Internet mechanism for placing information
onto a Client computer from a web server RFC 1312
coop COOPerative associations Internet domain
COP Character-Oriented Protocol
COPS Common Open Policy Service (RSVP) RFC
2748, RFC 2759, RFC 2940 (MOs)
COPS Connection-Oriented Presentation Service
ISO 8823, ITU-T X.216, ITU-T X.226
COPS-PR COPS-policy Provisioning RFC 3084
CORBA Common Object Request Broker Architecture
COS Class Of Service (DiffServ)
COSS Connection-Oriented Session Service
COTS Connection-Oriented Transport Service
CP Common Part (ATM adaptation layer)
CP Control Point or Control Program
CPBCCH ComPact Broadcast Control CHannel (EDGE)
CPCCCH ComPact Common Control CHannel (EDGE)
CPCS Common part convergence sublayer (AAL3/4
and AAL5)
CPE Customer Premises Equipment
CPL Call Processing Language RFC 2824
c-plane Control plane (used for user-network
and network-network signalling) ITU-T I.321
CPS Certificate Practice Statements (PKI) ITU-T
X.509
CPU Central Processing Unit
cq Republic of Congo
cr Costa Rica
CR Carriage Return (see ASCII)
CR Command / Response
CR Core Router
CRC Cyclic Redundancy Check
CRF Connection Related Function
CRL Certificate Revocation List RFC 2459, RFC
3279, RFC 3280
CRLF Carriage Return Line Feed (used as an
End-Of-Line, EOL marker)
CRM Cell Rate Margin (ATM)
CRMA Cyclic Reservation Multiple Access
CRS Cell Relay Service (ATM)
CRS Certification Request Syntax RFC 2314,
RFC 2986 (v1.7)
Crypto API Simple Cryptographic Program Interface
RFC 2628
CS Circuit Switching
CS Convergence Sublayer (ATM adaptation layer)
CS7 7-bit character set mode (pseudo-terminal
mode)
CS8 8-bit character set mode (pseudo-terminal
mode)
CS-CELP Conjugate Structure---Code Excited
Linear Predication (low bitrate audio) ITU-T G.729
CSCH Compact Synchronization CHannel (EDGE)
CSMA Carrier Sense Multiple Access
CSMA/CD Carrier Sense Multiple Access with
Collision Detection IEEE 802.3
CSR Cell misSequenced Ratio (ATM)
CSRC Contributing SouRCe (RTP) RFC 1889
CSU Channel Switching Unit
Ctag Confirmation TAG
CTD Cell Transfer Delay (ATM)
CTP Connection Termination Point
CTS Clear-To-Send ITU-T V.24
CTS Common Transport Semantics
CTS Conformance Test Services
CTS Cypher Text Stealing mode of RC5 RFC 2040
cu Cuba
CU Currently Unused bits
CUG Closed User Group
cv Cap Verde
CV Code Violation
CWD Change Working Directory (FTP)
Cwnd Congestion WiNDow (TCP) RFC 2581
cx Christmas Island
CX CoaXial cable
cy Cyprus
cz Czech Republic |
| D |
D
Delivery confirmation bit ITU-T X.25
D hexadecimal digit value equal to decimal
'13'
DA Destination Address
Daemon Disk And Execution MONitor (UNIX background
agent program) RFC 0361
DAL Dedicated access line
DAMA Demand assigned multiple access
DAP Data Access Protocol (DECnet)
DAP Directory Access Protocol
DARPA Defense Advanced Research Project Agency
Das Directory monitoring (mib-2) RFC 1567
DAS Directory Assistance Service RFC 1202,
RFC 1564, RFC 2792
DAS Directory System Agent
DAS Double Attached Station (FDDI)
DASD Digital Access Storage Device
DASS Distributed Authentication Security Service
RFC 1507
DAT Digital Audio Tape RFC 3190
DAYTIME DAYTIME protocol RFC 0867
dB DeciBel
DB-9 9-pin D-plug connector EIA 562
DB-25 25-pin D-plug connector ISO 2110
DB-37 37-pin D-plug connector ISO 4902
D-bit Delay (IP type of service)
DBPSK Differential Binary Phase Shift Keying
IEEE 802.11
DC Device Control (see ASCII)
DC Direct Current
DC-bit Demand Circuits (OSPF) RFC 1793
DCC Data Country Code (X.121)
DCCS Distributed Capability Computing System
RFC 0708, RFC 0712
DCD Data Carrier Detect ITU-T V.24
DCE Data Circuit-terminating Equipment
DCE Distributed Computer Environment
DCF Data Communications Function
DCF Distributed Coordination Function (WLAN)
IEEE 802.11
D-channel Data Channel
DCL Digital Command Language (Digital equipment
corporation)
DCLASS DCLASS object of RSVP for admission
control and QOS policy on DiffServ network RFC 2996
DCN Data Communications Network
DCS Digital Cellular System (mobile telephone
system)
DD Database Description packet (OSPF) RFC 2328
DDCMP Digital Data Communications Message Protocol
(DECnet)
DDDB Distributed Directory DataBase (IBM APPN)
DDI Direct Dialling In
DDI Document Delivery Instructions protocol
DDL Data Descriptive Language for shared data
RFC 0242
DDP Datagram Delivery Protocol (Appletalk layer
3)
DDS Digital Data System
de Germany
DE Directory Entries (X.500)
DE Discard Eligibility (ATM \& frame relay)
DEA Directory Entry Attributes (X.500)
DEBUG Network Debugging Protocol RFC 0643
DEC Digital Equipment Corporation (now Compaq/Hewlett
Packard)
DEC Digital Equipment Corporation
DECNET Networking protocol of the Digital equipment
corporation
DEFLATE DEFLATE compression algorithm RFC 1951,
RFC 1979 (PPP), RFC 2394
DEL DELete (see ASCII)
DELE DELEte (FTP)
DES Defense Encryption Standard (US Government)
RFC 1851, RFC 2947-8, RFC 2952-3
DESE PPP DES Encryption Protocol RFC 1969
DESEbis PPP DES Encryption Protocol version
2 RFC 2419
DFI Domain specific part Format Identifier
(numbering)
DGP Dissimilar Gateway Protocol
DGPT Direction de la Reglementation G\'{e}n\'{e}rale
de Postes et Telecommunications (France)
DGT Direcci\'{o}n General de Telecommunicaciones
(Spain)
DGT Director General of Telecommunications
DHC Dynamic Host Configuration load balancing
algorithm RFC 3074
DHCP Dynamic Host Configuration Protocol RFC
1531, RFC 1533-4, RFC 1541, RFC 2131-2, RFC 2563, RFC 2610,
RFC 2855, RFC 2937, RFC 3004, RFC 3011, RFC 3046, RFC 3118,
RFC 3203 (reconfigure), RFC 3361
DIB Directory Information Base (X.500)
DICOM Digital Imaging and Communications In
Medicine RFC 3240
DICT DICTionary Server Protocol RFC 2229
DID Direct Inward Dialling
DIF Directory Interoperability Forum
DiffServ Differentiated Services RFC 2474-5,
RFC 2638, RFC 2873, RFC 2963, RFC 2983, RFC 2998, RFC 3086,
RFC 3260, RFC 3270 (MPLS), RFC 3287 (RMON), RFC 3289 (MIB),
RFC 3290
DIS Draft International Standard
DISC DISConnect (HDLC,LLC)
DISCARD Discard Protocol RFC 0863
DISP Directory information shadowing protocol
DIT Directory Information Tree (X.500)
DIX Digital Equipment Corporation / Intel /Xerox
DIXIE Directory Interface and assistance protocol
for smaller hosts RFC 1249
dj Djibouti
dk Denmark
DL Data Language RFC 0515
DLCI Data Link Connection Identifier (Frame
Relay) ITU-T Q.922
DLE Data Link Escape see ASCII
DLS Data Link Switching RFC 1434, RFC 1795,
RFC 1937, RFC 2024 (MOs), RFC 2106, RFC 2114
DLSw Data Link Switching RFC 1434, RFC 1795,
RFC 1937, RFC 2024 (MOs), RFC 2106, RFC 2114
DlswMIB Data Link SWitching MIB(mib-2) RFC
2024
DLU Destination Logical Unit
DLUR Dependent Logical Unit Requester (IBM
APPN) RFC 2232 (MOs)
DLUS Dependent Logical Unit Server (IBM APPN)
RFC 2232 (MOs)
dm Dominica
DM Data Mark (NVT-ASCII)
DM Delta Modulation
DM Dense Mode protocol-independent multicasting
(PIM)
DM Disconnected Mode (HDLC, LLC)
DMA Deferred Maintenance Alarm
DMD Directory Management Domain
DME Distributed Management Environment
DMI Digital Multiplex Interface
DMO Domain Management Organization
DMTF Desktop Management Task Force
DMZ DeMilitarized Zone (in multi-stage firewall)
DN Directory Number
DN Distinguished Name
DNA Digital Network Architecture (DECNET)
DNCP DECNet Control Protocol RFC 1376, RFC
1762 (ph IV)
DNIC Data Network Identification Code ITU-T
X.121
Dns DNS MIB (mib-2) RFC 1611
DNS Domain Name System RFC 0897, RFC 0921,
RFC 0974, RFC 1034-5, RFC 1591, RFC 1611-2 (MIB), RFC 1794,
RFC 1876, RFC 1886 (IPv6), RFC 1995-6, RFC 2065, RFC 2136-7,
RFC 2181 RFC 2230, RFC 2535-41, RFC 2671-3, RFC 2929, RFC 3071,
RFC 3197 (MIB extensions), RFC 3363-4 (IPv6)
DNS NCACHE Negative CACHEing of DNS queries
RFC 2308
DNS RR Domain Name System Resource Record RFC
1183, RFC 1348, RFC 1637, RFC 1706, RFC 2782, RFC 2915, RFC
3123
DNS SRV DNS RR for location of SeRVices RFC
2052, RFC 2782
DNS UPDATE Dynamic UPDATEs in the Domain Name
System RFC 2136
DNSSEC Secure Domain Name System RFC 3007-8,
RFC 3090, RFC 3225-6
DNS-ALG DNS Application Level Gateway RFC 2694
DOCSIS Data Over Cable Service Interface Specification
RFC 2669-70 (MIB), RFC 3083 (MIB), RFC 3256
DoD Department of Defense (USA)
DODIIS Department of Defense Intelligence Information
System (TELNET) RFC 1043
DOM Document Object Model RFC 2803
DOP Directory Operational and binding management
Protocol
DOS Denial Of Service RFC 2267, RFC 2827
DOS Disk Operating System
dot12 IEEE 802.12 MIB (mib-2) RFC 2020
DPC Destination Point Code
DPCM Differential Pulse Code (speech) Modulation
DPI Distributed Program Interface (part of
SNMP) RFC 1228, RFC 1592 (v2)
DPS Distributed Programming System RFC 0708
DPSK Differential Phase Shift Keying
DQDB Dual Queue Dual Bus IEEE 802.6
DQPSK Differential Quadrature Phase Shift Keying
IEEE 802.11
DR Designated Router (OSPF)
DRS Data Reconfiguration Service RFC 0166
DS Destination Station (IEEE 802.11)
DS Differentiated Services (see DiffServ)
DS Digital Section (transmission line)
DS Direct Sequence
DS Directory Service
DS Field Differentiated Service Field RFC 2474,
RFC 2475, RFC 2873
DS0 Digital Signal hierarchy level 0 (N. America)
(64 kbit/s PDH) RFC 2494 (MOs)
DS1 Digital Signal hierarchy level 1 (N. America)
(1.544 Mbit/s) RFC 1232 (MIB), RFC 1406 (MOs), RFC 2495 (MOs)
DS2 Digital Signal hierarchy level 2 (N. America)
(6.312 Mbit/s) RFC 2495 (MOs)
DS3 Digital Signal hierarchy level 3 (N. America)
(45 Mbit/s) RFC 1233 (MIB), RFC 1407 (MOs), RFC 2496 (MOs)
DSA Directory Service Agent (X.500)
DSAP Destination Service Access Point
DSCP Differentiated Services CodePoint (DiffServ)
RFC 2474
DSE Data Switching Exchange
DSE DSA-Specific Entry RFC 3045
DSG Default Slot Generator (DQDB)
DSL Digital Subscriber Line RFC 3276 (MOs)
DSLAM Digital Subscriber Line Access Module
DSLCP Dynamically switched Link Control Protocol
RFC 1307
DSML Directory Services Markup Language
DSN Delivery Status Notification RFC 1894,
RFC 2530, RFC 2852
DSN Distributed Systems Network (Hewlett Packard)
DSP Digital Signal Processing
DSP Directory System Protocol
DSP Domain-Specific Part RFC 0982
DS-PHY Direct Sequence Spread Spectrum PHYsical
layer protocol (WLAN) IEEE 802.11
DSR Data Set Ready ITU-T V.24
DSS Data Security Solutions www.datasecuritysolutions.com
DSS Digital Signalling System ITU-T Q.931,
ITU-T Q.2931
DSS1 Digital subscriber signalling system 1
(ISDN) ITU-T Q.931
DSS2 Digital subscriber signalling system 2
(ATM) ITU-T Q.2931
DSSS Direct Sequence Spread Spectrum
DSU Digital Service Unit or data service unit
DTD Data Type Definition (HTML)
DTE Data Terminal Equipment
DTMF Dual Tone Multi-Frequency telephone handset
signalling RFC 2833
DTP Data Transfer Process (FTP) RFC 0959
DTP Data Transfer Protocol RFC 0163, RFC 0171,
RFC 0264
DTR Data Terminal Ready ITU-T V.24
DU Data Unit
DUA Directory User Agent RFC 1373, ITU-T X.500
DUAL Diffusing Update Algorithm (Cisco routing
algorithm used in EIGRP)
DUT Device Under Test
DV Digital Video RFC 3189, IEC 61834
DVMRP Distance Vector Multicast Routing Protocol
RFC 1075
DVP Distance Vector Protocol (routing protocol)
DWDM Dense Wave Division Multiplexing
DXC Digital crossConnect
DXI Data eXchange Interface
dz Algeria |
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