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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 |
| M |
M Manager M Mandatory
M1-interface Management interface between ATM
CEQ and private NMS (ATM Forum)
M2-interface Management interface between private
ATM network and private NMS (ATM Forum)
M3-interface Management interface between private
NMS and public NMS (ATM Forum)
M4-interface Management interface between public
ATM network and public NMS (ATM Forum)
M5-interface Management interface between two
different public NMSs (ATM Forum)
ma Morocco
MA Medium Adaptor
MAC Medium Access Control IEEE 802.3 (ethernet),
IEEE 802.5 (token ring)
M-ACTION (CMIP) request an object to perform
an action
MADCAP Multicast Address Dynamic Client Allocation
Protocol RFC 2730, RFC 2907
MAE MAnaged Ethernet (Internet exchange \&
peering point)
MAIL Internet Message Format RFC 0822, RFC
2822
MAN Metropolitan Area Network
MANET Mobile Ad-hoc NETworking RFC 2501
MAP Manufacturing Automation Protocol
MAP Mobile Application Part (SS7)
MAPOS Multiple Access Protocol on SONET / SDH
RFC 2171-6, RFC 3186 (tunneling mode)
MARC MAchine Readable Cataloguing records RFC
2220
MARS Multicast Address Resolution Server RFC
2149, RFC 2269, RFC 2443, RFC 2602
MASC Multicast Address Set-Claim protocol RFC
2365, RFC 2909
MAU Media Access Unit (Token ring LAN)
MAU Medium Attachment Unit (ethernet LAN) IEEE
802.3l
MaxCR MAXimum Cell Tate
MaXIM-11 Mapping between X.400 /Internet email
and Mail-11 RFC 2162
MB MegaByte (8 000 000 bits)
Mb/s Megabits per second
M-bit Marker bit (RTP) RFC 1889
M-bit More packets follow
Mbit/s Megabits per second (1 000 000 bits/second)
MBONE Multicast backBONE
MBP Mail Box Protocol RFC 0196, RFC 0221 (v2),
RFC 0278
Mbps Megabits per second
MBS Maximum Burst Size
MBZ Must Be Zero
mc Monaco
M-CANCEL-GET (CMIP) cancels previous M-GET
command
MC-bit MultiCast extensions for OSPF (MOSPF)
RFC 1584
MCDV Maximum Cell Delay Variation (ATM)
MCF Message Communication Function
MCGAM MIXER Conformant Global Address Mapping
RFC 2163
MCI Microwave Communications Inc (USA)
MCLR Maximum Cell Loss Ratio (ATM)
MCNS Multimedia Cable Network System partners
Ltd (developing DOCSIS) RFC 2670 (MIB)
MCP MAC Convergence Protocol (DQDB)
MCP Multilink Control Protocol (PPP) RFC 1717
MCR Maximum Cell Rate (ATM)
M-CREATE (CMIP) creates objects
MCS Modulation and Coding Scheme
MCS Multicast Server RFC 2022
MCTD Maximum Cell Transfer Delay (ATM)
MCU Multipoint Control Unit
md Republic of Moldova
MD Management Domain
MD Mediation Device
MD Message Digest algorithm RFC 1186 (MD4),
RFC 1319 (MD2), RFC 1320 (MD4), RFC 1321 (MD5), RFC 1544 (MD5),
RFC 1864 (MD5), RFC 2082 (MD5)
MD2 Message Digest 2 algorithm RFC 1319
MD4 Message Digest 4 algorithm RFC 1320
MD5 Message Digest 5 algorithm RFC 1321, RFC
2385 (TCP signature)
M-DELETE (CMIP) deletes objects
MDI Medium-Dependent Interface
MDL Medium-Dependent Layer
MdmMIB dial-up MoDeM objects (mib-2) RFC 1696
MDN Message Disposition Notification RFC 2530
MDP Medium Drop Priority (see DiffServ)
MDU Management Data Unit
Megaco Media Gateway Control Protocol RFC 2705
(v1), RFC 2805, RFC 2897, RFC 2885-6, RFC 3015 (v1.0), RFC 3064
RFC 3149, ITU-T H.248
MEMS MicroElectroMechanical System
M-EVENT-REPORT (CMIP) allows a network resource
to announce the occurrence of an event
MF Management Function (TMN)
MF Mapping Function
MF Mediation Function
MF More Fragments bit (IPv4 protocol)
mg Madagascar
MGCP Media Gateway Control Protocol RFC 2705
(v1), RFC 2805, RFC 2897, RFC 2885-6,
RFC 3015 (v1.0), RFC 3064 RFC 3149, ITU-T H.248
M-GET (CMIP) read value of an attribute
mh Marshall Islands
MH Message Handling
MHRP Mobile Host Routing Protocol
MHS Message Handling System ITU-T X.400
MHTML Multipart (multimedia) HyperText Markup
Language RFC 2112, RFC 2387
MIB Management Information Base RFC 1065, RFC
1212, RFC 1213, RFC 1214, RFC 2578-80 (v2)
mib-2 Management Information Base for network
management of TCP/IP internets RFC 1156,
RFC 1213
MIB-II Management Information Base for network
management of TCP/IP internets RFC 1156, RFC 1213
MIC Medium Interface Connector (jack, plug
or socket)
MICP Mobile Internet Control Protocol
MID Message IDentifier (DQDB)
MID Multiplexing IDentification (ATM)
midcom Middlebox communication RFC 3303-4
MIF Management Information File
MII Medium-Independent Interface
mil MILitary Internet domain
MIL-STD MILitary STanDard
MIM Management Information Model
MIME Multipurpose Internet Mail Extensions
RFC 1341, RFC 1521-4, RFC 1556, RFC 1563, RFC 1740-1, RFC 1820,
RFC 1844, RFC 1847-8, RFC 1872, RFC 1896, RFC 2017, RFC 2045-9,
RFC 2077, RFC 2110, RFC 2112, RFC 2159-61, RFC 2184, RFC 2231,
RFC 2387, RFC 2422-6, RFC 2480, RFC 2503, RFC 2557, RFC 2586,
RFC 2912-3, RFC 2927, RFC 3009, RFC 3204, RFC 3236, RFC 3240
MipMIB Mobile IP MIB (mib-2) RFC 2006
MIS Management Information System
MIS Mobile Interface Server
MISTY1 Mitsubishi SecuriTY block cipher encryption
algorithm RFC 2994
MIXER MIME Internet X.400 Enhanced Relay RFC
2156
mk Macedonia
MKD MaKe Directory (FTP)
ml Mali
ML Maximum Length
MLDP Multicast Listener Discovery Protocol
RFC 3019 (MIB)
MLID Multiple Link Interface Driver (Novell
Netware)
MLP MultiLink Procedure
MLT MultiLevel Transmission (line code)
MLTNET MuLti-TelNet subsystem RFC 0339
mm Myanmar
mm millimetre
MM Message Mode (AAL3/4 or AAL5)
MM MultiMode fibre
MMF Multi-Mode Fibre ITU-T G.651, ITU-T G.657
MMI Man-Machine Interface
MMS Multimedia Message Service
mn Mongolia
MNP Microcom Networking Protocol
MNT MaNagemenT
mo Macau
MO Managed Object (MIB)
mobile IP IP mobility (see
IP mobility)
MOCS Management Object Conformance Statement
MODE transfer MODE (FTP)
modem MODulator / DEModulator
MOSPF Multicast extensions for OSPF (open shortest
path first) RFC 1584
MOTIS Message Oriented Text Interchange System
ISO/IEC 10021
mp Northern Mariana Islands
MP Measurement Point
MP Multilink Protocol (PPP) RFC 1717, RFC 1990,
RFC 2686
MP+ Ascend (Lucent) Multilink Protocol Plus
RFC 1934
MP3 MPEG Layer 3 (audio compression format)
RFC 3119
MPEG Motion Picture Experts Group (video encoding
standard) RFC 2038, RFC 2343, RFC 3003, RFC 3016
MPH Management Physical Header (physical layer
primitive)
m-plane Management plane (used for network
management messages) ITU-T I.321
MPLS Multi-Protocol Label Switching RFC 2547
(BGP-MPLS VPNs), RFC 2702 (traffic engineering), RFC 2917 (MPLS-VPN),
RFC 3031 (MPLS architecture), RFC 3032 (label coding), RFC 3034
(MPLS-FR), RFC 3035 (MPLS-ATM), RFC 3036 (MPLS-LDP), RFC 3270
(DiffServ) RFC 3346, RFC 3353
MPLS-ATM MPLS over ATM (Asynchronous Transfer
Mode) RFC 3035
MPLS-BGP MPLS using the Border Gateway Protocol
RFC 2547
MPLS-FR MPLS over Frame Relay RFC 3034
MPLS-SHIM SHIM header for MultiProtocol Label
Switching RFC 3032
MPLS-VPN Virtual Private Networks by means
of MPLS RFC 2917
MPOA Multi-Protocol encapsulation Over ATM
RFC 1483, RFC 2684
MPOFR Multi-Protocol Over Frame Relay RFC 1294,
RFC 1490, RFC 2427
MPP Message Posting Protocol RFC 1204
MPP Multi-Protocol Package (Appletalk)
MPPC Microsoft Point-to-Point Compression protocol
RFC 2118
MPPE Microsoft Point-to-Point Encryption RFC
3078-9
MPT Ministero delle Poste e Telecommunicazioni
(Italy)
mq Martinique
mr Mauritania
MRRU Maximum-Receive-Reconstructed Unit (PPP
multilink protocol) RFC 1717
MRU Maximum Receive Unit (PPP) RFC 1661
ms Montserrat
MS Management Services
MS Mobile Station
MS Multiplex Section (SDH)
MSAP MAC Service Access Point
MSB Most Significant Bit
MS-bit MaSter bit (as opposed to slave---OSPF
synchronisation)
MSC Mobile Switching Centre (mobile telephone
network)
MSDP Multicast Source Discovery Protocol
MSDTP Message Services Data Transmission Protocol
RFC 0713
MSDU MAC Service Data Unit
M-SET (CMIP) add, remove or replace command
MSF Management Systems Framework
msg MeSsaGe
MSL Maximum Segment Lifetime (TCP) RFC 0793
MSN Message Sequence Number
MSN Microsoft Network (Internet Service Provider)
MSN Multiple Systems Networking
MSOH Multiplex Section OverHead (SDH)
MSP Management Service Provider (TMN)
MSP Message Security Protocol
MSP Message Send Protocol RFC 1159, RFC 1312
(v2)
MSS MAN Switching System (SMDS)
MSS Maximum Segment Size (TCP) RFC 0793, RFC
0879, RFC 1122
MST Multiplex Section Termination
MSVC Meta Signalling Virtual Channel (ATM)
mt Malta
Mta Mail monitoring (mib-2) RFC 2249
MTA Message Transfer Agent ITU-T X.400
MTAE Message Transfer Agent Entity ITU-T X.400
MTBF Mean Time Between Failures
MTL Message Transfer Layer ITU-T X.400
MTP Mail Transfer Protocol (replaced by SMTP)
RFC 0772, RFC 0780
MTP Message Transfer Part (SS7)
MTP Message Transmission Protocol RFC 0680
MTP Multicast Transport Protocol RFC 1301
MTS Message Transfer Service or message transfer
system ITU-T X.400
MTTR Mean Time To Repair
MTU Maximum Transmission Unit RFC 791 (IPv4),
RFC 877 (X.25), RFC 894 (ethernet V2), RFC 1042 IEEE 802.2),
RFC 1063 (path discovery options), RFC 1191 (PMTU discovery),
RFC 1209 (SMDS), RFC 1356 (X.25/ISDN), RFC 1390 (FDDI), RFC
1626 (ATM AAL5), RFC 1661 (PPP), RFC 1981 (IPv6), RFC 2225 (IP
over ATM), RFC 2923 (TCP problems)
MTU Message Transfer Unit
MTU Message Transmission Unit
mu Mauritius
MUA Message User Agent
MUF Maximum Usable Frequency
Mu-law PCM speech encoding (North American
and Japanese standard)
Multicast over IP and ATM RFC 2365, RFC 2366
museum MUSEUMs Internet domain
MUX MUltipleXor
mv Maldives
MVI Major Vector Identifier (Token ring MAC)
MVL Major Vector Length (Token ring MAC)
MVS Multiple Virtual
Storage (IBM operating system)
mw Malawi
mx Mexico
my Malaysia
mz Mozambique
MZAP Multicast Zone Announcement Protocol RFC
2776 |
| N |
N
Non-print (FTP)
na Namibia
NA Network Adaptor (An interworking function
between B-ISDN and narrowband ISDN)
N/A Not Applicable
NAE Network Address Extension
NAI Network Access Identifier RFC 2486
NAK Negative AcKnowledgement (rejection) RFC
1106
name Internet domain for individuals
Name/Finger Name/Finger Protocol RFC 0742
NAPTR Naming Authority PoinTeR (DNS RR) RFC
2915
NARP Non-broadcast multiple access Address
Resolution Protocol RFC 1735
NAS Network Access Server RFC 2881-2 (next
gen)
NASA National Aeronautical and Space Administration
NAT Network Address Translation RFC 1631, RFC
2663, RFC 2993, RFC 3022, RFC 3027, RFC 3235
NAT-PT Network Address Translator - Protocol
Translation RFC 2766, RFC 3152
NAU Network Addressable Unit (SNA)
NAV Net Allocation Vector IEEE 802.11
NBFCP PPP NetBIOS Frames Control Protocol RFC
2097
NBMA Non-Broadcast Multiple Access network
RFC 1735, RFC 2332, RFC 2491, RFC 2677 (MOs)
NBNS NetBIOS over TCP/IP Name Server
NBP Name Binding Protocol (Appletalk)
NBS Non-Breaking Space
nc New Caledonia
NCOP Network Code Of Practice
NCP Netware Control Protocol (Novell Netware)
NCP Network Control Program (IBM SNA)
NCP Network Control Protocol (PPP) RFC 1332
(IPCP), RFC 1377 (OSINLCP), RFC 1378 (ATCP), RFC 1552 (IPXCP),
RFC 1638 (BCP), RFC 1661, RFC 1762 (DNCP), RFC 1962 (CCP)
NCP Network Control Protocol or Network Control
Program RFC 0055, RFC 0060, RFC 0215
NCS Network Computing System (UNIX)
NDF New Data Flag
NDIS Network Driver Interface Specification
(Microsoft Windows)
NDS Novell Directory Service RFC 2241
ne Niger
NE Network Element
NECP Network Element Control Protocol RFC 3040
NEF Network Element Function
NEL Network Element Layer (ISO management model)
ITU-T M.3000
NEM Network Element Manager
net NETwork organisations Internet domain
NET Norme Europ\'{e}ene de T\'{e}l\'{e}communication
netascii the NVT (Network Virtual Terminal)
ASCII character set
NetBEUI NetBIOS Extended User Interface
NetBIOS NETwork Basic Input/Output System
NETBLT NETwork BLock Transfer (bulk transfer
protocol) RFC 0969, RFC 0998
NETCRT NETwork ChaRacTer display protocol RFC
0205
NETRIS NETwork Remote Input Service (replaced
by NETRJS) RFC 0088
NETRJS NETwork Remote Job entry Service RFC
0189, RFC 0325, RFC 0338, RFC 0599, RFC 0740
NETRJT NETwork Remote Job service for TIPS
RFC 0283
NewsML Multimedia News extensible Markup Language
(XML) RFC 3085
NEXT Near End crossTalk
nf Norfolk Island
NFB Number of Fragment Blocks RFC 0791
NFILE New FILE (file access protocol) RFC 1037
NFS Network File System RFC 1094, RFC 1813
(v2), RFC 2623, RFC 2624 (v4), RFC 3010 (v4)
ng Nigeria
NGL Network Graphics Loader RFC 0186
NHC Next Hop Client RFC 2520, RFC 2583
NHFLE Next Hop Label Forwarding Entry (MPLS)
RFC 3031
NHRP Next Hop Resolution Protocol RFC 2332-3,
RFC 2335-6, RFC 2520, RFC 2603, RFC 2677 (MOs), RFC 2735, RFC
2991
ni Nicaragua
NIC Network Information Centre
NIC Network Interface Card
NICNAME Network Information Centre NAME database
service RFC 0812, RFC 0954, RFC 1834
NIS Network Information Service
N-ISDN Narrowband ISDN
NIST US National Institute of Standards and
Technology
NIU Network Interface Unit
nl Netherlands
NL New Line (FTP)
NLA Network Layer Address RFC 2450, RFC 2921
(IPv6)
NLA Next-Level Aggregation identifier (IPv6
address) RFC 2373
NLM Network Lock Manager (Novel Netware)
NLPID Network Layer Protocol IDentifier ISO/IEC
TR 9577
NLRI Network Layer Reachability Information
(BGP)
NLST Name LiST (FTP)
nm nanometre
NM Network Management
NMB Number of Monitored Blocks (physical layer)
NMC Network Management Centre
NMF Network Management Forum
NMF Network Management Framework
NML Network Management Layer (ISO management
model) ITU-T M.3000
NMS Network Management System
NN National Number
NN Network Node (IBM APPN)
NNI Network-Network Interface (or Network-Node
Interface)
NNTP Network News Transfer Protocol RFC 0977,
RFC 2980
no Norway
NOC Network Operations Centre
NOFLSH Do not flush after interrupt (pseudo-terminal
mode)
NOOP No Operation (FTP)
NOP No Operation (NVT-ASCII)
np Nepal
NP Network Performance
NPA Number Plan of America
N/P-bit Not-So-Stubby-Area LSA (OSPF) RFC 1587
NPC Network Parameter Control (ATM)
NPDU Network Protocol Data Unit
NPMA Non Pre-emptive priority Multiple Access
NPSI NCP-Packet-Switching-Interface (IBM SNA/X.25)
nr Nauru
N(R) Receive sequence Number (HDLC)
NREN National Research and Education Network
NRM Network Resource Management
NRT Non-Real Time
NRZ Non-Return-to-Zero (line code)
NRZI Non Return-to-Zero Inverted (line code)
N(S) Send sequence Number (HDLC)
NSAP Network Service Access Point RFC 0982,
RFC 1237, RFC 1348, RFC 1629, RFC 1637, RFC 1706, RFC 1888 (IPv6)
NSDU Network Service Data Unit
NSF National Science Foundation
NSF Network Search Function (IBM APPN)
NSFnet National Science Foundation NETwork
RFC 1074
NSN National Significant Number ITU-T E.164
NSP Network Services Protocol (DECnet)
NSR Non-Source Routed
NSS Network and Switching Sub-system
NSS Network Security Services
NSSA Not-So-Stubby-Area (OSPF)
NT Network Termination
NT1 Network Terminating equipment type~1 (ISDN)
NT2 Network Terminating equipment type~2 (ISDN)
NTBBA Network Terminator BroadBand Access
NTE network Terminating Equipment
NTN National Terminal Number ITU-T X.121
NTP Network Time Protocol RFC 0958, RFC 1059,
RFC 1119 (v2), RFC 1165, RFC 1305 (v3), RFC 1708
NTU Network Termination Unit
nu Niue
NUI Network User Identification ITU-T X.25
NUL NULl (see ASCII)
NULL encryption encryption algorithm RFC 2410
NULL service Null service type RFC 2997
NVFS Network Virtual File System (FTP)
NVP Network Voice Protocol RFC 0741
NVT Network Virtual Terminal (see telnet)
NVT-ASCII Network Virtual Terminal-ASCII character
set (see telnet)
NWG Network Working Group
nz New Zealand |
| O |
O
Optional
OAF Origination Address Field
OAKLEY generic key exchange and determination
protocol RFC 2412
OAM Operations And Maintenance or Operations,
Administration and Maintenance
OAM\&P Operations, Administration, Maintenance
and Provisioning
OAMC Operations, Administration and Maintenance
Centre (TMN)
O-bit Offset bit (L2TP) RFC 2661
O-bit Opaque option (OSPF) RFC 2370
O-bit Optional bit (BGP)
OC Optical Carrier (SONET)
OC-1 Optical carrier (SONET) OC-1 has bitrate
of 51.84 Mbit/s
OC-12 622 Mbit/s SONET digital line system
(SONET)
OC-192 10 Gbit/s SONET digital line system
(SONET)
OC-3 155 Mbit/s SONET digital line system (SONET)
OC-48 2.5 Gbit/s SONET digital line system
(SONET)
OCC Other Common Carrier
OCCN Outgoing-Call-CoNnected (L2TP) RFC 2661
OCD Out of Cell Delineation
OC-n Optical carrier level-n (SONET)
OCRNL Translate carriage return to newline
(output) (pseudo-terminal mode)
OCRP Outgoing-Call-RePly (L2TP) RFC 2661
OCRQ Outgoing-Call-ReQuest (L2TP) RFC 2661
OCS Object Conformance Statement
OCSP Online Certificate Status Protocol RFC
2560
ODA Office Document Architecture
ODETTE Organisation for Data Exchange by Tele-Transmission
in Europe file transfer protocol RFC 2204
ODI Open Datalink Interface (Novell Netware)
ODMR On-Demand Mail Relay RFC 2645
ODP Open Distributed Processing
ODP Originator Detection Pattern
official standards Internet Official Protocol
Standards STD 1
OFN Optical Fibre Node
OfTel Office of Telecommunications (UK)
OH OverHead
OID Object Identifier
OLCUC Convert lowercase to uppercase (pseudo-terminal
mode)
OLRT OnLine Real-Time
OLS On-Line System (UCSB) RFC 0217
OLTU Optical Line Terminating Unit
om Oman
OM Object Management
OMAP Operations and Maintenance Application
Part (SS7)
OMC Operations and Maintenance Centre
OMG Object Management Group
ONC Open Network Computing RFC 2695 (ONC RPC)
ONLCR Map NL (new line) to CR-NL (carriage
return new line) (pseudo-terminal mode)
ONLRET New line (NL) performs a carriage return
(output) (pseudo-terminal mode)
ONOCR Translate newline to carriage return-newline
(output) (pseudo-terminal mode)
ONP Open Network Provision (European Union)
OO Object Oriented
OOF Out Of Frame
OOK On-Off Keying (digital modulation)
OPAL OPtical Access Line
OPC Originating Point Code (SS7)
opcode OPerations CODE
OpenPGP Open standard Pretty Good Privacy RFC
3156
OPOST Enable output processing (pseudo-terminal
mode)
O/R Originator / Recipient (X.400) RFC 1836,
RFC 2294
ORB Object Request Broker
org ORGanisations Internet domain
ORS Optical Repeater Station
OS Operating System
OSF Open Software Foundation
OSF Operations Systems Function
OSH Optical Splitter Head
OSI Open Systems Interconnection ISO 7498
OSIE OSI Environment
OSINLCP OSI Network Layer Control Protocol
(PPP) RFC 1377
OSIRM OSI Reference Model
OSPF Open Shortest Path First RFC 1131, RFC
1247 (v2), RFC 1248 (MIB), RFC 1252 (MIB), RFC 1253 (MIB), RFC
1364, RFC 1370, RFC 1403, RFC 1583-7 (v2), RFC 1745, RFC 1765,
RFC 1793, RFC 1850 (MIB), RFC 2154, RFC 2178 (v2), RFC 2328-9
(v2), RFC 2370, RFC 2676, RFC 2740 (IPv6), RFC 2844, RFC 3137
OSS Operations and support sub-system
OTA Over-The-Air
OTAPA Over-The-Air Service Parameter Administration
of mobile stations RFC 2604, RFC 2636
OTASP Over-The-Air Service Provisioning of
mobile stations RFC 2604, RFC 2636
OUI Organizational Unique Identifier
OWF Optimum Working Frequency |
| P |
P
Padding field bit
P Page structure (FTP)
P Performance
P Poll Bit
P/F Poll / Final bit
P1-interface X.400 interface for relaying between
post offices
P3-interface X.400 interface between client
and post office (submission/delivery)
pa Panama
PA PreArbitrated segment (DQDB)
PABX Private Automatic Branch eXchange (nowadays
synonymous with PBX)
PAC PPTP Access concentrator Client (PPTP)
RFC 2367
PAC Proxy Auto Configuration RFC 3040
PACCH Packet Associated Control CHannel (EDGE)
PAD Packet Assembler / Disassembler RFC 1053,
ITU-T X.3
PAD PADding
PADI PPPoE Active Discovery Initiation message
RFC 2516
PADO PPPoE Active Discovery Offer message RFC
2516
PADR PPPoE Active Discovery Request message
RFC 2516
PADS PPPoE Active Discovery Session confirmation
message RFC 2516
PADT PPPoE Active Discovery Termination message
RFC 2516
PAF PreArbitrated frame (DQDB)
PAM Pulse Amplitude Modulation
PAMA Pre-Assigned Multiple Access
PANS Pretty Amazing New Stuff
PAP Password Authentication Protocol RFC 1334
PARC Palo Alto Research Centre (Xerox Corporation)
PARENB Parity enable (pseudo-terminal mode)
PARMRK Mark parity and framing errors (pseudo-terminal
mode)
PARODD Odd parity (otherwise even parity).
(pseudo-terminal mode)
PAS Port Address Support
PASS PASSword (FTP)
PASTE Provider Architecture for differentiated
Services \& Traffic Engineering RFC 2430
PASV PASsiVe port (FTP)
Path PATH message (RSVP) RFC 2205
PathErr PATH message ERRor (RSVP) RFC 2205
PathTear PATH TEARdown message (RSVP downstream)
RFC 2205
P-bit Partial bit (BGP)
PBX Private Branch eXchange (an
office telephone system)
PC Personal Computer
PC Priority Control
PCCP PPP Connection Control Protocol RFC 1915
PCF Point Coordination Function (WLAN) \^{I}EEE
802.11
PCI Programming Communication Interface (like
an API)
PCI Protocol Control Information
PCIM Policy Core Information Model (extension
to CIM) RFC 3060 (v1)
PCM Pulse Code Modulation ITU-T G.711
PCMAIL distributed MAIL system for Personal
Computers RFC 0984, RFC 0993, RFC 1056
PCN Personal Communications Network (mobile
telephone system)
PCR Peak Cell Rate (ATM)
PCS Personal Communications System (mobile
telephone system)
PCS Physical Coding Sublayer
PDA Personal Digital Assistant (handheld computer)
PDCH Packet Data physical CHannel (GPRS)
PDF Portable Document Format RFC 2346
PDH Plesiochronous Digital Hierarchy ITU-T
G.701-4
PDN Public Data Network
PDO Packet Data Only
PDTCH Packet Data Traffic CHannel (GPRS)
PDU Packet Data Unit
PDU Protocol Data Unit
pe Peru
PE PolyEthylene
PENDIN Retype pending input (pseudo-terminal
mode)
pf French Polynesia
PF Presentation Function
PFC Protocol Field Compression (PPP) RFC 1661
PF-KEY (packet forwarding) key management API
derived from BSD PF-ROUTE RFC 2367
PFR Portable Font Resource RFC 3073
pg Papua New Guinea
PG Peer Group
PGL Peer Group Leader
PGM Pragmatic General Multicast RFC 3208
PGP Password Generator Protocol RFC 0972
PGP Pretty Good Privacy (MIME security) RFC
1991, RFC 2015, RFC 2440
ph Philippines
PH Packet Handler
PH Primitive used by layer 2 to control the
PHysical layer
PHB Per-Hop Behaviour (DiffServ) RFC 1812 (default
PHB), RFC 2474, RFC 2475, RFC 2597-8, RFC 2836, RFC 3140
Ph-SAP Physical layer Service Access Point
PHY PHYsical layer or PHYsical layer protocol
PICS Protocol Implementation Conformance Statement
PID Protocol Identifier
PIM Protocol Independent Multicast RFC 2362
(sparse mode), RFC 2934 (MIB)
PIM-DM Protocol Independent Multicast - Dense
Mode
PiMF Pairs in Metal Foil (cable type)
PIM-SM Protocol Independent Multicast---Sparse
Mode RFC 2117, RFC 2337, RFC 2362
PIM-SSM Protocol Independent Multicast - Source-Specific
Multicast
PIN Personal Identification Number
PIN Personal Internet Name RFC 3043
PING Packet Internet Groper (ICMP echo or timestamp
request/reply) RFC 0792 (ICMP), RFC 2463 (ICMPv6), RFC 2925
(MOs)
PingMIB Packet Internet Groper MIB (mib-2)
RFC 2925
PINT PSTN / Internet inter NeTworking RFC 2458,
RFC 2848, RFC 3055
PIPE communications PIPE (POSIX) (an interface
between process and terminal device)
PIU Path Information Unit (IBM SNA)
pixel Picture Element
PIXIT Protocol Implementation eXtra Information
for Testing
pk Pakistan
PKCS Public Key Crypto-System RFC 2313-5, RFC
2437, RFC 2898, RFC 2985-6
PKI Public Key Infrastructure RFC 2459, RFC
2510-1, RFC 2527-8, RFC 2559-60, RFC 2585, RFC 2587, RFC 3029,
RFC 3039, RFC 3161, RFC 3280, ITU-T X.509
pl Poland
PL Pad Length (DQDB)
PL Physical Layer
PLCP Physical Layer Convergence Protocol
PLK Primary LinK station
PLL Phased Locked Loop
PL-LE Physical Layer - Layer Entity
PLMTS Public Land Mobile Telephone System
PL-OAM Physical Layer---Operation And Maintenance
cell
PL-OU Physical Layer Overhead Unit
PLP Packet Layer Protocol
PLS Physical Layer Signalling (ethernet LAN)
IEEE 802.3
PLS Primary Link Station
PLU Primary Logical Unit (IBM SNA)
PLW Payload Length Word IEEE 802.11
pm Saint Pierre and Miquelon
PM Performance Management
PM Physical Medium (sublayer)
PMA Physical Medium Attachment (ethernet LAN)
IEEE 802.3
PMD Physical layer Medium Dependent
PMP Point-to-MultiPoint (radio system)
PMTU Path Maximum Transmission Unit (see also
MTU) RFC 1063, RFC 1191, RFC 1981 (IPv6)
PMUX Primary MultipleXor
pn Pitcairn Island
PNA Private Network Administrator (MPLS) RFC
2917
PNG Portable Network Graphics RFC 2083
PNNI Private Network-Node Interface or Private
Network-Network Interface (ATM)
PNS PPTP (Point-to-Point Tunneling Protocol)
Network Server RFC 2367
POH Path OverHead (SDH)
POI Path Overhead Identifier (DQDB)
POI Point-Of-Interconnection
PolSK POLarity Shift Keying
PON Passive Optical Network
POP Point Of Presence
POP Post Office Protocol RFC 0918, RFC 0937
(v2), RFC 1081 (v3), RFC 1082, RFC 1225 (v3), RFC 1460 (v3),
RFC 1725 (v3), RFC 1939 (v3), RFC 1957, RFC 2384, RFC 2449
PORT FTP PORT (FTP)
POS Packet-over SDH/SONET
POS Point Of Sale (system)
POSIX Portable Operating System Interface (UNIX)
POTS Plain Old Telephone Service
PP Point-to-Point link
PPD Packet Processing Delay
PPDU Presentation Protocol Data Unit (OSI layer
6)
PPM Pulse Position Modulation
PPP Point-to-Point Protocol RFC 1134, RFC 1171,
RFC 1172, RFC 1220, RFC 1331-4, RFC 1471-4 (MOs), RFC 1548-9,
RFC 1661-3, RFC 1973-9, RFC 2023 (IPv6), RFC 2153, RFC 2472
(IPv6), RFC 2686-7, RFC 3153, RFC 3186 (tunneling)
PPP multilink PPP multilink protocol (MP) RFC
1990
PPP/AAL5 PPP over AAL5 (ATM adaptation layer
5) RFC 2364
PPP/FR PPP in Frame Relay RFC 1973
PPP/HDLC PPP in HDLC-like framing RFC 1662
PPP-LINK PPP LINK quality monitoring RFC 1989
PPPoE Point-to-Point Protocol (PPP) Over Ethernet
RFC 2516
PPPoISDN PPP over ISDN RFC 1618
PPPoSONET PPP over SONET/SDH RFC 1619, RFC
2615, RFC 2823, RFC 3255
PPPoX.25 PPP over X.25 RFC 1598
PPS Pulse-Per-Second API (for UNIX-like operating
systems) RFC 2783
PPTP Point-to-Point Tunneling Protocol RFC
2637
pr Puerto Rico
PRA Primary Rate Access (ISDN)
PRBS Pseudo Random Binary Sequence
PRDMD PRivate Directory Management Domain
PRI Primary Rate Interface (ISDN) ITU-T I.421,
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)
PRIM PResence and Instant Messaging protocol
PrintMIB PRINTer objects (mib-2) RFC 1759
PRM Protocol Reference Model ITU-T I.321 (ATM)
PRMA Packet Reservation Multiple Access
PRMD PRivate Management Domain (X400)
PRNG Pseudo-Random Number Generator
ProtocolID PROTOCOL Identifier (IP protocol
number)
Proxy-PAR Proxy (minimal version of) PNNI Augmented
Routing RFC 2843-4
PRR Pulse Repetition Rate
PRS Primary Reference Source (timing clock)
PRT Pulse Repetition Time
Prty Parity
ps Palestinian Territories
PSAP Physical Service Access Point (OSI)
PSDN Public Switched Data Network
PSE Packet Switched Exchange
PSF PLCP (Physical Layer Convergence Protocol)
Signalling Field IEEE 802.11
PSH PuSH (TCP)
PSI Packet Switched Interface
PSK Phase Shift Keying (digital modulation)
PSN Packet Switch Node (originally IMP: Interface
Message Processor)
PSN PL-OAM Sequence Number (ATM)
PSTN Public Switched Telephone Network
pt Portugal
PT Payload Type or protocol type
PTCCH Packet Timing advance Control CHannel
(EDGE)
PTE Path Terminating Equipment
PTI Payload Type Identifier
PTM Path Trace Management
PTO Public Telecommunications Operator
PTP Point-To-Point (radio system)
PTR PoinTeR
PTS Proceed To Send (signal)
PTT Post, Telegraph and Telephone (company)
pty Pseudo Terminal
PU Physical Unit (IBM SNA)
PV Parameter Value
PVC Permanent Virtual Circuit
PVC Poly Vinyl Chloride (plastic used for cable
sheathing)
PVCC Permanent Virtual Channel Connection
PVPC Permanent Virtual Path Connection
pw Palau
PW PassWord
PWD Print Working Directory (FTP)
PWM Pulse Width Modulation
py Paraguay |
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