Editing List of telephony terminology

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This is a '''list of telephony terminology''' and acronyms which relate to telephony networks.

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==A==
*[[Advanced Intelligent Network]], (AIN), see also [[Intelligent Network|IN]] or Intelligent Network
*[[Automatic number announcement circuit|Automatic number announcement circuit (ANAC)]]
*[[Automated attendant|Automated Attendant]]
*ACD - [[Automatic Call Distribution]]
*[[Articulation score]]

==B==
*[[Blue box (phreaking)|Blue box]] - a device that was used to bypass the normal long-distance call switching tones typically used to obtain free calls.

==C==
*[[Call originator]] - (or ''calling party'', ''caller'' or ''A-party'') a person or device that initiates a telephone call by dialling a telephone number.
*[[Call waiting]] - a system that notifies a caller of another incoming telephone call by sounding a sound in the earpiece.
*[[Called party]] - (or ''callee'' or ''B-party'')
*[[Caller (telecommunications)|Caller]]
*[[Calling party]]
*[[Conference call]] (multi-party call)
*[[Payphone|COCOT]]
*Cut{{snd}}unexpected, and usually sudden, termination of call, line or service

==D==
*[[Dial peer]]
*[[Dial tone]]
*[[Distribution frame]]
*[[Dual-tone multi-frequency signaling|Dual-tone multi-frequency signaling (DTMF)]]

==E==
*[[Emergency telephone number]]
*[[End instrument]]
*[[Engset calculation]]
*[[Erlang unit]]

==F==
*[[Fax]] - (contraction of ''facsimile'') a device connected to the telephone network to enable documents to be scanned and sent to a receiving fax machine
*Frame - A [[distribution frame]], a set of open wiring racks where circuits are cross connected to trunks and equipment

==H==
*[[Handoff]]
*[[Handoff|Handover]]
*[[Help desk]]
*[[Howler tone]] (see ROH tone)
*[[Hunt Group]]

==I==
*[[Infrastructure]]
*[[Intelligent Network]] (IN)
*[[Interface functionality]]
*[[Inside plant]]
*[[Intelligent Network Interface Device]] (iNID) - replaces the [[Network Interface Device]] outside a subscriber's house like when customers subscribe to [[AT&T Inc.|AT&T's]] [[U-verse]] brand of services.
*[[Interactive voice response]] (IVR)
*[[ISDN User Part]] (ISUP)

==L==
*[[telephone line|Line]]
*[[Local loop]]
*[[Long-distance operator]]

==O==
*[[On-premises wiring]]
*[[Operator assistance]]
*[[Outside plant]]

==P==
*[[Patch-through access]]
*[[Permanent signal]]
*[[Operator assistance|Person-to-person]]
*[[Plain old telephone service]], or "POTS"
*[[PSTN|Public Switched Telephone Network]] (PSTN)
*[[Loading coil|Pupinization]]

==R==
*[[Receiver off hook tone|Receiver Off-Hook tone]] (ROH)
*[[Red telephone box]]
*[[Red box (phreaking)|Red box]]
*[[Regional Bell Operating Company]] (RBOC)
*[[Ringer equivalency number]] (REN)
*[[Ringing signal]]
*[[Rural radio service]]

==S==
*[[Smartphone]]
*[[Station-to-station]]
*[[Signalling System 7]] (SS7)

==T==
*[[Tandem signaling]]
*[[Tandem switch]]
*[[Transaction Capabilities Application Part]] (TCAP)
*[[Telemarketing]]
*[[Telephone]]
*[[Telephone booth]]
*[[Telephone call]]
*[[Telephone card]]
*[[Telephone directory]]
*[[Telephone exchange]]
*[[Telephone tapping]]
*[[Teletraffic engineering]]
*[[Time-division multiplexing|Time Division Multiplexing]] (TDM)
*[[Toll-free_telephone_number]] (TFN) A telephone number that is billed for all arriving calls, but free for the calling party.
*[[Trap and trace]]
*[[Telegraphy#Telex|TWX]]

==V==
*[[Vertical service code]]
*[[Voicemail]]
*[[VoIP|Voice over Internet Protocol]] (VoIP)

==W==
*[[Western Union]]
*[[Wide Area Telephone Service]] (WATS)
*[[WATS line]]
*[[Wireless network]]
*[[Wireless Telephony Applications Interface]] (WTAI)
*[[Wi-Fi]]

==Z==
*[[Zenith number]]

==Acronyms==

{| border=1 style="border-collapse:collapse" cellspacing=0 cellpadding=5
! Acronym
! Name
! Notes
|-
| 1ESS || [[Number One Electronic Switching System|Number 1 Electronic Switching System]] (Alcatel-Lucent) || US
|-
| 1FR || [[Flat rate]] service || US
|-
| 2G|| [[2G|second-generation mobile telephone]] || &nbsp;
|-
| 2.5G|| [[2.5G|Enhanced 2G mobile telephone]] || &nbsp;
|-
| 3G|| [[3G|third-generation mobile telephone]] || &nbsp;
|-
|4ESS
|[[No. 4 Electronic Switching System|Number 4 Electronic Switching System]] (Alcatel-Lucent)
|
|-
| 4WTS || Four-wire termination set || US
|-
|5ESS
|[[5ESS Switching System|Number 5 Electronic Switching System]] (Alcatel-Lucent)
|
|-
| ACD|| [[Automatic Call Distribution]]/Director ||&nbsp;
|-
| ACTS || Advanced Coin Telephone Service || US
|-
| ADSL || [[Asymmetric Digital Subscriber Line]] || &nbsp;
|-
| ANI || [[Automatic Number Identification]] || US
|-
| AMA || [[Automatic Message Accounting]] || US
|-
| BOK || Unblocking || UK
|-
| CCIS || [[Common Channel Interoffice Signaling]] || &nbsp;
|-
| CID || [[Caller ID]] || &nbsp;
|-
| CLEC || [[Competitive Local Exchange Carrier]] || US
|-
| CLI || [[Caller ID|Caller Line Identification]] || Europe
|-
| CLID || [[Caller ID|Caller Line ID]] || UK
|-
| CTI || [[Computer telephony integration]] ||&nbsp;
|-
| COSMOS || [[COSMOS (Telecommunications)|Wire records]] ||&nbsp;
|-
| DDCO|| Direct Dial Central Office (Opposite of DID) || US
|-
| DDD|| [[Direct Distance Dialing]] || US
|-
| DDI || [[private branch exchange|Direct Dialing In]] || UK
|-
| DECT || [[Digital Enhanced Cordless Telecommunications]] || &nbsp;
|-
| DID || [[Direct Inward Dialing]] || US
|-
| [[Digital Multiplex System|DMS]] || [[Digital Multiplex System]] (e.g. DMS-100) || Can
|-
| DNIS|| [[Dialed Number Identification System]] || US
|-
| DSL || [[Digital subscriber line]] || &nbsp;
|-
| DTMF || [[dual-tone multi-frequency]] || &nbsp;
|-
| FDM || [[Frequency-division multiplexing]] || &nbsp;
|-
| GPRS || [[General Packet Radio Service]] || &nbsp;
|-
| GSM || [[Global system for mobile communications]] || &nbsp;
|-
| GST || [[Ground start|Ground Start]] Trunk || US
|-
| IDDD || International Direct Distance Dialing || US
|-
| IDF || [[Intermediate distribution frame]] || US
|-
| ILEC || [[Incumbent Local Exchange Carrier]] || US
|-
| ISD || [[International Subscriber Dialling|International Subscriber Dialing]] || [[United Kingdom|UK]] and [[India]]
|-
| ISDN || [[Integrated Services Digital Network]] || &nbsp;
|-
| IVR || [[interactive voice response|Interactive Voice Response]] (a.k.a. VRU) || &nbsp;
|-
| KSU || Key Switching/System Unit || US
|-
| LST || [[Loop start|Loop Start]] Trunk || US
|-
| MDF || [[Main Distribution Frame]] || &nbsp;
|-
| MF || [[Multi-frequency]] || US
|-
| PABX || [[PABX|Private Automatic Branch eXchange]] || Europe
|-
| PBX || [[private branch exchange|Private Branch eXchange]] || US
|-
| PMBX || Private Manual Branch eXchange || UK
|-
| POTS || [[plain old telephone service|Plain Old Telephone Service]] || &nbsp;
|-
| PSTN || [[Public Switched Telephone Network]] || &nbsp;
|-
| RCMAC || [[Recent Change Memory Administration Center]] || US
|-
| REN || [[ringer equivalency number]] || &nbsp;
|-
| SMS || [[Short message service|Short Message Service]] (i.e. text messages) || &nbsp;
|-
| SF || Single Frequency supervision tone ([[2600 hertz|2600]]) || US
|-
| SIP || Session Initiation Protocol || US
|-
| SP Lock || [[SIM lock#Unlocking technology|Unlocking]]|| UK
|-
| SS7 || [[Signaling System 7]] || &nbsp;
|-
| STD || [[Subscriber trunk dialling]] || UK and India
|-
| T-CXR || [[T-carrier]] (e.g. T-1) || US
|-
| TAPI || [[Telephony Application Programming Interface]] || &nbsp;
|-
| TFN || [[Toll-free telephone number]] || &nbsp;
|-
| TR || [[Tip and ring]] || US
|-
| TSPS || [[Traffic Service Position System]] || &nbsp;
|-
| TXE || Telephone eXchange Electronic || UK
|-
| UAX || Unit Automatic eXchange || UK
|-
| VoIP || [[VoIP|Voice over Internet Protocol]] || US
|-
| WAP  || [[Wireless Application Protocol]] || &nbsp;
|-
| WATS || [[Wide Area Telephone Service]] || US
|-
| WTAI  || [[Wireless Telephony Applications Interface]] || &nbsp;
|}

{{Telecommunications}}

[[Category:Technical terminology]]
[[Category:Telephony]]
[[Category:Telecommunications lists|Telephony terminology]]