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Billing World & OSS World Glossary

- 0 - 9 -

1+switched service

3G (third generation wireless)

3GPP (The 3rd Generation Partnership Project )

3GPP2 (The Third Generation Partnership Project 2)

8+switched service

A/D (analog-to-digital converter)

A/R (accounts receivable)

AAA/A&A (authentication, authorization and accounting)

AAL (ATM adaptation layer)

ABR (available bit rate)

ABS (alternative billing services)

AC or AuC (authentication center)

account history

accounts payable

accounts receivable (see A/R)

accounts receivable turnover

ACD (automatic call distributor)

ACH (Automated Clearinghouse)

ACH Association

ACK (acknowledgment)

ACNA (access carrier name abbreviation)

adjustment code

ADPCM (adaptive differential pulse code modulation

ADSL (asymmetrical digital subscriber line)

advance billing

AIN (advanced intelligent network)

AIOD (automatic identification of outward dialing)

A-Key (authentication key)

ALEC (alternative local exchange carrier)

ALG (application layer gateway)

ALI (automatic location identification)

alternating current

ALTS (alternate local transport services)

ALTS (Association for Local Telecommunications Service)

AM (amplitude modulation)

AMA (automated message accounting)

AMA (automatic message accounting)

AMADNS (AMA data networking system)

AMI (alternate mark inversion)

AMPS (advanced mobile phone service)

ANI (automatic number identification)

ANSI (American National Standards Institute)

answer supervision (see AS)

AOA (angle of arrival)

AOS (alternative operator services)

AP (adjunct processor)

API (application programming interface)

AR (accounts receivable)

ARP (address resolution protocol)

ARPA (Advanced Research Project Agency)

ARPANET (Advanced Research Projects Agency Network

ARPG (average revenue per group)

ARPU (average revenue per user)

arrears billing

AS (answer supervision)

ASCII (American Standard Code for Information Inte

ASCX12 (Accredited Standards Committee; AIN Switch)

ASP (application service provider)

ASP Industry Consortium

ASR (access service request)

asset management

ASYNCH (asynchronous)

AT (access tandem) or AT switch (access tandem swi

ATIS (Alliance for Telecommunications Industry Sol

ATM (asynchronous transfer mode)

ATV (advanced television)

automated bill payment

Automated Clearing House

automatic call delivery

automatic dialer

average age of accounts receivable

average collection period or days’ receivables

AVL (automatic vehicle location)

B2B (business to business)

B2C (business to consumer)

B2E (business to enterprise)

background noise

BAF (Bellcore automatic message accounting format)

BAN (billing account number)

batch processing

BECN (backward explicit congestion notification)

BER (bit error rate)

BERT (bit error rate test)

bidirectional transmission

bill of exchange

B-ISDN (broadband integrated services digital network)

B-ISDN (broadband integrated services digital network)

BLEC (building local exchange carrier)

BNS (bill number screening)

BOC (Bell operating company)

book or ledger balance

BPCS (broadband personal communications service)

BPMI.org (Business Process Management Initiative Organization

BPML (business process modeling language)

BPMS (business process management system)

bps (bits per second)

BREW (Binary Runtime Environment for Wireless)

BRI (basic rate interface)

BSC (base station controller)

BSC (base station controller)

BSC (border session controller)

BSP (billing service provider)

BSS (business support system)

BTA (basic trading areas)

BTN (billed telephone number)

BTN (billing telephone number)

BTO (business technology optimization)

BTS (base transceiver station)

bundled services

burst switching

BVA (billing validation application)

CA (certificate Authority)

CABS (carrier access billing system)

CAC (carrier access code)

CAD/CAM (computer-aided design/computer-aided manufacturing

CAI (common air interface)

CALEA (Communications Assistance to Law Enforcement Act)

call back fraud

call detail recording

call forwarding

call forwarding (busy)

call forwarding (no answer)

call forwarding (variable)

caller ID (caller identification)

calling party pays

CALLS (Coalition for Affordable Local and Long Distance)

CAMEL (customized applications for mobile enhanced logic)

CAP (carrierless amplitude and phase modulation)

CAP (competitive access provider)

CARE (customer account record exchange)

carrier line charge

CAS (channel associated signaling)

CATV (community antenna television)

CAVE (cellular authentication and voice encryption)

CB (channel bank)

CBP (convergent billing platform)

CBQ (class-based queuing)

CBR (constant bit rate)

CBR (continuous bit rate)

CC (cluster controller)

CC (common carrier)

CC&B (customer care and billing)

CCB (Common Carrier Bureau)

CCIS (common channel interoffice signaling)

CCITT (Consultative Committee International Teleph

CCL (carrier common line)

CCLC (carrier common line charge)

CCS (common channel signaling)

CCSA (common control switching arrangement)

CD (collision detection)

CDDI (copper distributed data interface)

CDMA (code division multiple access)

cdma2000-1X EV/DO (evolution - data only

cdma2000-1X EV/DV (evolution - data/voice

cdma2000-1x RTT

cdmaOne (IS-95/95A)

cdmaOne (IS-95B

CDN (content delivery network)

CDPD (cellular digital packet data)

CDPN (called party number)

CDR (call detail record)

cell loss priority (CLP)

cellular hand-off

CELP (code excited linear prediction)

central office code

CENTREX (central exchange)

CEV (controlled environmentally vaults)

CF (call forwarding)

CIBER (cellular intercarrier billing exchange roaming)

CIC (carrier identification code)

CICS (customer information control system)

CIDR (classless inter-domain routing)

CIR (committed information rate)

circuit ID (circuit identification)

circuit switching

CIT (computer integrated telephony)

CIX (commercial Internet exchange)

CLASS (custom local area signaling services)

class of service (CoS)

CLC (Carrier Liaison Committee)

Clearing House Interbank Payments System (CHIPS)

clearing member

CLEC (competitive local exchange carrier)

client-server architecture

CLLI (common language location identifier)

CLNP (connectionless network protocol)

CM (cable modem)

CMC (cellular mobile carrier)

CMDS (centralized message distribution system)

CMIP (common management information protocol)

CMIS (common management information service)

CMRS (commercial mobile radio service)

CMTS (cable modem terminating system)

CNAP (calling name presentation)

CNR (carrier to noise ratio)

CO (central office)

COAX (coaxial cable)

COC (central office connection)

CODEC (coder/decoder)

collection fractions

collection policy

co-location facility

COM (component object model)

Communications Act of 1934

communications protocol

CompTel (Competitive Telecommunications Association)

control channel

CORBA (common object request broker architecture)

COS (Corporation for Open Systems)

COSMOS (central office system for mainframe operation)

COT (central office terminal)

COTS (commercial off-the-shelf)

CP (customer premise)

CPCN (certificate of public conveyance necessity)

CPE (customer premises equipment)

CPN (calling party number)

CPNI (customer proprietary network information)

CPP (calling party pays)

CPS (cycles per second)

CPU (central processing unit)

CRA (Cost and Revenue Assurance)

CRAM (Challenge-response authentication mechanism)

CRC (cyclical redundancy checking)

credit analysis

CRIS (customer record information system)

CRM (customer relationship management)

CSA (carrier serving area)

CSE (CAMEL service environments)

CSMA/CD (carrier sense multiple access with collis

CSR (customer service record)

CSR (customer service representative)

CSU (channel service unit)

CSU/DSU (channel/digital service unit)

CTI (computer telephone integration)

CTIA (Cellular Telecommunications & Internet Assocation)

CVSDM (continual variable slope delta modulation)

CW (call waiting)

DA (directory assistance)

DACS (digital access and crossconnect system or digital cross connects

DAL (Dedicated Access Line)

DAMA (demand assignment multiple access)

D-AMPS (digital advanced mobile phone service)

DAT (digital audio tape)

data collection

days in receivables

dB or DB (decibel)

DBAS (database administration)

dBrn (decibels above reference noise)

DBS (direct broadcast satellite)

DC (direct current)

DCCH (digital control channel)

D-CLEC (data competitive local exchange carrier)

DCOM (distributed component object model)

DCS (digital communications services; digital cros

DCS (digital crossconnect system)

DCS-1800 (digital cellular system)

DDD (direct distance dialing)

DDS (digital data service)

DE (discard eligibility)

DECT (digital European cordless telephone)

dedicated service

demarcation point

DEN (directory-enabled network)

DES (data encryption standard)

destination code

DHCP (dynamic host configuration protocol)

DID (direct inward dialing)

DID (direct inward dialing)

DIFFSERV (differentiated services)

digital cellular

direct sequence spread spectrum

direct trunking

directory number

DISA (direct inward system access)

disaster recovery plan

disaster recovery plan

DLC (digital loop carrier)

DLCI (data link connection identifier)

DLEC (data local exchange company)

DMH (data message handler)

DMS (Document Management System)

DMT (discrete multitone)

DMTF (Distributed Management Task Force)

DN (directory number)

DNC list (do not call list)

DNIS (dialed number identification service)

DNS (domain name server)

DNS (domain name service)

DNS (domain name system)

DOCSIS (data over cable service interface specification)

DOD (direct outward dialing)

DOV (data over voice)

DOW (day of week)

DPBX (digital private branch exchange)

DPI (Dots Per Inch)

DQPSK (differential quadrature phase shift keying)

DR (digit receiver)

DRM (digital rights management)

DS (digital signal)

DS-0 (digital signal level 0)

DS-1 (digital signal level 1)

DS-2 (digital signal level 2)

DS-3 (digital signal level 3)

DSC (digital selective calling)

DSCP (differentiated code service point)

DSI (digital speech interpolation)

DSL (digital subscriber line)

DSLAM (digital subscriber line access multiplexer)

DSP (digital signal processor)

DSR (data set ready)

DSS (decision support systems)

DSSS (direct sequence spread spectrum)

DST (data services template)

DSU (data or digital service unit)

DTE (data terminal equipment)

DTMF (dual tone multi-frequency)

DTR (data terminal ready)

dual PIC (dual primary interexchange carrier)

DWDM (dense wavelength division multiplexing)

E&M (ear and mouth) signaling

E/O (end office)

E911 (enhanced 911)

EA (extended address)

EAI (enterprise application integration)

EAS (extended area service)

EB (electronic bonding)

EBCDIC (Extended Binary Coded Decimal Interexchange)

e-bill (electronic bill)

EBITDA (earnings before interest, taxes, depreciation)

EBPP (electronic bill payment and presentment)

ECC (Error Checking Code)

ECIC (Electronic Communications Implementation)

e-commerce (electronic commerce)

ECSA (Exchange Carriers Standards Association)

EDGE (enhanced data rates for global evolution)

EDI (electronic data interchange)

EDRs (event data records)

EFT (electronic funds transfer)

EIA (Electronics Industries Alliance)

EIPP (electronic invoice payment and presentment)

EIR (equipment identification register)

EJB (Enterprise Java Bean)

Electronic Frontier Foundation (EFF)

EMI (electronic messages interexchange)

EML (element management layer)

EMR (electronic message record)

enhanced services

ENUM (electronic numbering)

ER (edge router)

ERM (enterprise resource management)

ERP (enterprise resource planning)

ES (earth station)

ES (edge switch)

ESF (extended superframe format)

ESMR (enhanced specialized mobile radio)

ESN (electronic serial number)

ESN DEC (electronic serial number decimal)

ESN HEX (electronic serial number hexadecimal)

ESP (enhanced service providers)

ESS (electronic switching system)

ETN (electronic tandem network)

e-TOM (enhanced telecom operations map)

ETSI (European Telecommunications Standards Institute)

event processing

E-WCDMA (Europe's wideband code division multiple access)

facilities-based

FASB (Financial Accounting Standards Board)

FCAPS (Fault, Configuration, Accounting, Performance, Security)

FCC (Federal Communications Commission)

FDD (frequency division duplex)

FDDI (fiber distributed data interface)

FDDI-LAN (fiber distributed data interface-LAN)

FDM (frequency division multiplexing)

FDMA (frequency division multiple access)

FDT (full duplex transmission)

FEC (forward error correction)

FECN (forward explicit congestion notification)

federal excise tax

Federal MTSA (Mobile Telecommunications Sourcing Agreement)

FEP (front end processor)

FG (feature group)

FHSS (frequency hopping spread spectrum)

FIFO (first in/first out)

FIOS (Fiber Optic Service)

FIPS (Federal Information Processing Standard)

FITL (fiber in the loop)

FIX (Federal Internet Exchange)

FM (frequency modulation)

FMC (fixed mobile convergence)

FO (fiber optics)

FOC (firm order confirmation)

FPLMTS (future public land mobile telecommunication service)

FPS (fast packet switch)

FPS (fast packet switching)

FR (frame relay)

fractional T-1 line

fractional T-3 line

FRAD (frame relay access device)

fraud management system

frequency reuse

FRS (frame relay switch)

FSA (fiber serving area)

FSK (frequency shift keying)

FTAM (file transfer access and management)

FTP (file transfer protocol)

FTTC (fiber to the curb)

FTTH (fiber to the home)

FTTN (fiber to the neighborhood)

FTTP (Fiber to the Premises)

FTTX (Fiber to the wherever)

FX (foreign exchange)

FXO (foreign exchange office)

FXS (foreign exchange switch)

GAAP (generally accepted accounting principles)

GAP (generic address parameter)

gbps (gigabits per second)

GDMO (guidelines for the definition of managed objects)

GEOS (geostationary earth orbit satellite)

GETS (Government Emergency Telecommunications Service)

GHz (gigahertz)

GIS (geographic information systems)

GMPLS generalized multiprotocol label switching

GMS (geostationary meteorological satellite)

GOSIP (government open systems interconnection protocol)

GPRS (general packet radio service)

GPS (global positioning system)

GS (gateway server)

GSM (Global System for Mobile communication)

GTT (Global Title Translation)

GUI (graphical user interface)

HDLC (high level data link control)

HDML (handheld device markup language)

HDR (high data rate)

HDSL (high data rate digital subscriber line)

HDTV (high definition television)

HEC (header error control)

HFC (hybrid fiber coax)

hierarchical billing

HIPPI (high-performance parallel processing interface)

HLR (home location register)

HSCSD (high-speed circuit-switched data)

HSPC (Homeland Security Police Council)

HTML (hypertext markup language)

HTTP (hypertext transfer protocol)

I/O (input/output)

IAD (integrated access device)

IAP (Internet access provider)

IBPP (Internet bill presentment and payment)

IC (integrated circuit)

ICB (individual case basis)

ICMP (Internet control message protocol)

ICP (integrated communications provider)

IDDD (international direct distance dialing)

iDEN (integrated digital enhanced network)

ID-FF (Identity Federation Framework)

IDLC (integrated digital loop carrier)

IDR (invoice data repository)

ID-SIS (Identity Service Interface Specifications)

IDSL (integrated services digital network digital

IEC (International Electrotechnical Commission)

IEEE (Institute of Electrical & Electronics Engine

IETF (Internet Engineering Task Force)

IIOP (Internet inter-orb protocol)

ILEC (incumbent local exchange carrier)

IM (inventory management)

IMEI (international mobile equipment identity)

IMS (Internet Multimedia Subsystem)

IMSI (international mobile subscriber identity)

IMT (international mobile telecommunications)

IMT-2000 (International Mobile Telecommunications-

IMTC (International Multimedia Telecommunications

IN (intelligent network)

inside plant inventory

installation charge

intelligent peripheral

interconnection

interexchange carrier (IXC)

interLATA (inter local access and transport area)

interoperability

intraLATA (intra local access and transport area)

IOPS (Internet operators providers services)

IP (Internet protocol)

IPDR (Internet protocol detail record)

IPO (Initial Public Offering)

IPsec (Internet protocol security)

IPTV (Internet Protocol Television)

IPv6 (Version 6 of the IP Protocol)

IRM (international roaming mobile identification number)

IRU (indefeasible right of use)

IS (interim standard)

IS-41 (Interim Standard 41)

ISDN (integrated services digital network)

ISN (Internet service node)

ISO (International Standards Organization)

ISO-9000 (International Standards Organization-900

ISP (information service provider)

ISP (Internet service provider)

ISUP (ISDN user part or integrated services digita

ISVs (independent software vendors)

IT (information technology)

ITFA (internet tax freedom act)

ITSP (Internet telephony service provider)

ITU (International Telecommunications Union)

IVR (interactive voice response unit)

IXC (interexchange carrier)

J2EE (Java Platform, Enterprise Edition)

JIA (joint intercarrier agreement)

JIT (just in time) inventory

JPEG (Joint Photographic Experts Group)

J-WCDMA (Japan's-wideband code division multiple access)

kbps (kilobits per second)

kcps (kilocycles per second)

KFT (kilo-feet)

KHz (kilohertz)

L2TP (layer 2 tunneling protocol)

LADT (local area data transport)

LAN (local area network)

LASS (local area signaling services)

LATA (local access transport area)

LAWN (local area wireless network)

LBS (location-based services)

LCD (liquid crystal display)

LD (long distance)

LDAP (lightweight directory access protocol)

LEC (local exchange carrier)

LED (light emitting diode)

LEOS (low earth orbit satellite)

LERG (local exchange routing guide)

letter of credit (L/C)

LFACS (loop facility assignment and control system

LIDB (line information database)

LMDS (local multipoint distribution service)

LNP (local number portability)

LOA (letter of agency)

LPC (linear prediction code)

LRC (longitudinal redundancy check)

LRN (location routing number)

LSMS (local service management system)

LSO (local service office)

LSOA (local service order administration)

LSOG (local service ordering guidelines)

LSR (local service request)

LTM (local transport mileage)

M&A (mergers and acquisitions)

MAC (mobile attenuation code)

MAC Address (media access control address)

MACH (multinational automated clearinghouse)

MAE (metro area exchange)

MAN (metropolitan area network)

MBN (main billed number)

MBU (mobile business user)

MCN (master customer number)

MDB (multidimensional database)

MDF (main distribution frame)

MDIS (mobile data intermediate station)

MDN (mobile dialed number)

MDS (multipoint distribution service)

MDU (multi-dwelling unit)

ME (mobile equipment)

MECAB (multiple exchange carrier access billing)

mediation device

MEGACO (media gateway control)

MEOS (medium Earth orbit satellites)

MFJ (modified final judgment)

MGCP (media gateway control protocol)

MHz (megahertz)

MIB (management information base)

MIME (multipurpose Internet mail extensions)

MIN (mobile identification number)

minimum contract period

MIPS (millions of instructions per second)

MIS (management information system)

MM (millimeter wave microwave)

MM (millimeter)

MMDS (multichannel multipoint distribution service

MMS (multimedia messaging services)

modem (modulator-demodulator)

MOU (minutes of use)

moves, adds and changes (MAC)

MPEG (Moving Picture Experts Group)

MPLS (multiprotocol label switching)

MSA (metropolitan statistical area)

MSAG (master street address guide)

MSC (mobile switching center)

MSO (multiple system operator)

MTA (mail/message transfer agent)

MTBF (mean time between failure)

MTP (message transfer part)

MTSO (mobile telephone switching office)

MTTR (mean time to repair)

MTU (maximum transfer/transmission unit)

MUC (minimum usage charge)

MUX (multiplexer)

MVNO (mobile virtual network operator)

NACHA (the electronic payments association)

N-AMPS (narrowband advanced mobile phone service)

NANC (North American Numbering Council)

NANP (North American Numbering Plan)

NAP (network access point)

NAPLS (North American presentation level protocol

NASUCA (National Association of State Utility Agencies)

NAT (network address translation)

NCS (National Communications System)

NE (network element)

NECA (National Exchange Carriers Association)

NEL (network element layer)

NENA (National Emergency Number Association)

NGN (next-generation networks)

NGOSS (next generation operations support systems)

NHRP (next-hop resolution protocol)

NI (network interface; network interconnect)

NIC (network interface card)

NID (network identifier)

NIIF (Network Interconnection/Interoperability For

NMC (network management center)

NML (network management layer)

NMS (network management system)

NNI (network-to-network interface)

NOC (network operations center)

NOI (notice of inquiry)

NOS (network operating system)

NP (number portability)

NPA (numbering plan area)

NPAC (Number Portability Administration Center)

NPRM (Network Performance Report Message)

NRC (non-recurring charge)

NSP (network service providers)

NT (network termination)

NT1 (network termination type 1)

NT2 (network termination type 2)

NTP (network time protocol)

NTSC (National Television System Committee)

number portability

O&P (ordering and provisioning committee)

OAM (operations, administration & maintenance)

OBF (Ordering and Billing Forum)

OC (optical carrier)

OC&C (other charges & credits)

OCN (operating company number)

OE (order entry)

OFDM (orthogonal frequency division multiplexing)

OFX (open financial exchange)

OLAP (online analytical processing)

OM (order management)

ONA (open network architecture)

ONU (optical network unit)

OOB (out-of-band signaling)

OODB (object-oriented database)

OOP (object-oriented programming)

OOT (object-oriented technology)

optical amplifier

ORB (object request broker)

order management

order processing

origination point

OS (operator services)

OS/DR (operator services/directory services)

OSA (open system architecture)

OSC (operator service company)

OSI (open system interconnection)

OSP (operator service provider)

OSS (operations support systems)

OTACC (over the air client care)

OTAP (over-the-air provisioning)

OTASP (over the air service provisioning)

OTP (one time password)

outside plant inventory

overlay area code

packet switching

PAD (packet assembly-disassembly)

payphone compensation charge

PBX (private branch exchange)

PCAOB (Public Company Accounting Oversight Board)

PCIA (Personal Communications Industry Association)

PCM (pulse code modulation)

PCMCIA (Personal Computer Memory Card Industry Ass

PCN (personal communications network)

PCR (peak cell rate)

PCS (personal communications service)

PCU (packet control unit)

PDA (personal digital assistant)

PDF (portable document format)

PDN (public data network)

permanent virtual connection

PHS (personal handyphone system)

PIC (primary interexchange carrier)

PIC/CARE (Primary Inter-Exchange Carrier)

PICC (pre-subscribed interexchange company charges)

PIN (personal identification number)

PING (packet internetwork grouper)

PKI (public key infrastructure)

PKIE (public key infrastructure exchange)

PLC (power line communications)

PLMN (public land mobile network)

PLU (percent local usage)

PM (phase modulation)

PO (purchase order)

POCSAG (Post Office Code Standardization Advisory Group)

point-of-sale entry (POS)

POP (point of presence)

POTS (plain old telephone service)

PP (point-to-point links)

PPP (point-to-point protocol)

PPPoE (Point-to-Point Protocol over Ethernet)

PPTP (point-to-point tunneling protocol)

preauthorized checks (PACs)

preauthorized electronic debits (PADs)

predictive dialers

PRI (primary rate interface)

product offering

PSAP (public safety answering point)

PSC (Public Service Commission)

PSDN (Packet-Switched Data Network)

PSDS (public switched digital service)

PSK (phase shift keying)

PSN (packet switching node)

PSR (product service request)

PSTN (Public Switched Telecomm Network)

PT (payload type)

PTM (packet transfer mode multiplexing)

PTT (Post Telephone & Telegraph Administration)

PUC (public utility commissions)

PVC (permanent virtual circuit)

QoS (quality of service)

QPSK (quaternary phase shift keying)

QPSX (queued packet and synchronous exchange)

R&D (research and development)

radio-frequency fingerprinting

RADIUS (remote access dial identification user ser

RADSL (rate adaptive digital subscriber line)

RAID (redundant array of inexpensive disks)

RAM (random access memory)

RAO (revenue accounting office)

RBOC (regional Bell operating company)

RC (ringing circuit)

RCC (radio common carrier)

RDSL (rate adaptive digital subscriber line)

RDU (remote distribution unit)

reciprocal compensation

recurring charge

RED (random early detection)

red-hat support

referential data

referential integrity

regression testing

remote monitoring

RespOrg (responsible organization)

revenue assurance

RF (radio frequency)

RI (ring indicator)

RJ-11 Jack (registered jack-11)

RJ-45 Jack (registered jack-45)

ROI (return on investment)

RS-232C (recommended standard-232C)

RSA (rural serving area)

RSM (remote switching module)

RSVP (resource reservation protocol)

RT (remote terminal)

RT (ringback tone)

RTCP (real-time conferencing protocol)

RTCP (real-time control protocol)

RTP (real time protocol)

RTS (request to send)

SAC (service access codes)

SALT (speech application language tags)

SAS-70 (statements on auditing standards numbers 70)

SBC (session border controller)

SBN (special billing number)

SCAI (switch-to-computer application interface)

SCC (specialized common carrier)

SCC (State Corporation Commission)

SCCP (signaling connection control part)

SCE (service creation environment)

SCM (station class mark)

SCP (service control point)

SD Television (Standard Definition Television)

SDH (synchronous digital hierarchy)

SDLC (synchronous data link control)

SDO (standards development organization)

SDR (speaker dependent recognition)

SECABS (small exchange carrier access billing syst

secure sockets layer

service assurance

service fulfillment

service location

service provider

SGCP (simple gateway control protocol)

SGML (Standard Generalized Markup Language)

SGSN (serving GPRS support nodes)

SI (systems integration)

SID (system identification)

SIM (subscriber identity module)

SIP (session intiation protocol)

SIR (speaker independent recognition)

SLA (service level agreement)

SLC (subscriber line charge)

SLC (subscriber loop carrier)

SLIP and PPP (Serial Line Internet Protocol and Point-to-point protocol)

SLP (service location protocol)

SMB (Small/medium buiness)

SMDR (station message detail recording)

SMDS (switched multi megabit data service)

SME (small-to-medium enterprise)

SMS (service management system)

SMS (short messaging service)

SMSC (short message service center)

SMTP (simple mail transfer protocol)

SN (service node)

SN&M (service negotiation and management)

SNAC (SMS/800 Number Administration Committee)

SNMP (simple management network protocol)

SO (service order)

SOAC (service order activation controller)

SOAP (Simple Object Access Protocol)

SOH (start of header)

SOHO (small office/home office)

SONET (synchronous optical network)

SOR (specification of requirements)

SORD (service order retrieval and distribution system)

SPCS (stored program controlled switch)

speech recognition

SPIN (service provider identification number)

spread spectrum

SQL (standard query language)

SS7 (signaling system 7)

SSD (shared secret data)

SSL (Secure Sockets Layer)

SSP (service switching point)

SSTP (Streamlined Sales Tax Project)

SSUTA (streamlined sales and use tax agreement)

Start-Stop Transmission

statement billing

STC (speech-to-text conversion)

STM (synchronous transfer mode)

STP (shielded twisted pair)

STP (signal transfer point)

stranded assets

STS (synchronous transport signal)

SVC (switched virtual circuit)

switched services

switching point

switchless resellers

SxS (step-by-step switch)

TA (terminal adapter)

TAP (transfer account procedure)

tax classification

TCAP (transaction capabilities application part)

TCIF (Telecommunications Industry Forum)

TCO (total cost of ownership/operations)

TCP (transmission control protocol)

TCP/IP (transmission control protocol/ Internet protocol)

TDD (time division duplex)

TDM (time division multiplexing)

TDMA (time division multiple access)

TDOA (time difference of arrival)

TD-SCDMA (time-division synchronous code-division multiple-access)

TE1& 2 (terminal equipment type 1 & type 2)

Telecommunications Act of 1996

TELNET (terminal emulation protocol)

TELRIC (Total Element Long Run Incremental Cost)

terminating office

termination charges

ternary PIC (ternary preferred interexchange carri

TFPC (Toll Fraud Prevention Committee)

TFTP (trivial file transfer protocol)

TIA (Telecommunications Industry Association)

TIE (time interval error)

Tier 1, Tier 2, Tier 3

TIPHON (telecommunications & Internet protocol harmonization)

TLDN (temporary local directory number)

TMF (TeleManagement Forum)

TMN (Telecommunications Management Network)

TNPP (telocator network paging protocol)

TOM model (Telecom Operations Map) model

ToS (type of service)

TP (twisted pair)

truth-in-billing

TSPS (traffic service position system)

TSR (telecommunications services resale)

TT (trouble ticket)

TTS (text-to-speech)

TV (television)

TWTA (traveling wave tube amplifiers)

UAT (user acceptance testing)

UDP (user datagram protocol)

UHF (ultra high frequency)

UM (unified messaging)

UML (universal modeling language)

UMTS (universal mobile telecommunications service)

UNE (unbundled network elements)

UNE-P (unbundled network element-platform)

UNI (user to network interface)

universal service

Universal Service Fund (USF)

UPC (usage parameter control)

URL (universal resource locator)

usage-based billing

USOC (universal service order codes)

USTA (United States Telecom Association)

UTP (unshielded twisted pair)

V&H (vertical and horizontal)

VA (value added)

VAN (value-added network)

VANS (value-added network services)

VAR (value-added reseller)

VAT (valued-added tax)

VBR (variable bit rate)

VC (venture capitalist)

VCI (virtual circuit identifier; virtual channel i

VDSL (very high data rate DSL)

vector-sum excited linear predictive coding (VSELP

VF (voice frequency)

VGPL (voice grade private line)

VHF (very high frequency)

virtual circuit

VLAN (virtual LAN)

VLR (visiting location register)

VM (virtual memory)

VoATM (voice over asynchronous transfer mode)

VoBB (voice over broadband)

VOD (video on demand)

VOD (voice operated device)

VoDSL (voice over digital subscriber line)

VoFR (voice over frame relay)

VoIP (voice over Internet protocol)

VPI/VCI (virtual path identifier/virtual channel i

VPIM (voice profile for Internet mail)

VPN (virtual private network)

VRU (voice response unit)

VSAT (very small aperture terminal)

VSP (video service provider)

VUI (voice-based user identification)

W3C (World Wide Web Consortium)

WAIS (wide area information service)

WAL (WATS access line)

WAN (wide area network)

WAP (wireless application protocol)

WASP (Wireless Application Service Provider)

WATS (wide area telecommunications service)

WCDMA (wideband code division multiple access)

WDM (wavelength division multiplexing)

WECA (Wireless Ethernet Compatibility Alliance)

WFQ (weighted fair queuing)

Wi-Fi (wireless fidelity)

WIN (wireless intelligent network)

wireless local area network

wireless modem (WM)

WLL (wireless local loop)

WMF (wireless message format)

WML (wireless markup language)

WNP (wireless number portablility)

WOL (web ontology language)

WS (work station)

WSC (web services client)

WTLS (wireless transport layer security)

WTP (wireless transaction protocol)

WWW (World Wide Web)

xDSL (x type digital subscriber line)

XML (extensible markup language)

XML DTD (extensible markup language data type defi

XoIP (Anything Over IP)

XSD (XML Schema Definition)

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