Glossary

We also have a nodes and acronyms database you may find useful: IMS VoLTE and 3GPP Interfaces

0-9

3rd Generation Partnership Project
4G (Fourth Generation Wireless)
5G (Fifth Generation Wireless)

A

AAA Server (authentication, authorization, and accounting)
Access Point Name (APN)
Access SBCs and Interconnect SBCs
Adaptive Multi-Rate (AMR)
Adaptive Multi-Rate Wideband (AMR-WB)
Advanced Intelligent Network (AIN)
Aggregate Maximum Bit Rate (AMBR)
Anonymous Call Rejection (ACR)
Ansible
Answer-Seizure Ratio (ASR)
Application Programming Interface (API)
Application Acceleration
Application Delivery
Application Delivery Controller (ADC)
Application Delivery Network (ADN)
Application Deployment
Application Hosting
Application Performance Monitoring
Application Server
Artifical Intelligence (AI)
Application Server Incoming Leg Control Model (AS-ILCM)
Application Server Outgoing Leg Control Model (AS-OLCM )
Asynchronous Communication
Asynchronous Transfer Mode (ATM)
Attribute Value Pair (AVP)
Authentication Token (ATUN)
Audio Conferencing
Auto Attendant (AA)
Automatic Call Distributor (ACD)
Automatic Number Identification (ANI)
Automatic Speech Recognition (ASR)
Automation Platform
Average Call Duration
Amazon Web Services

B

Back-to-Back User Agent (B2BUA)
Basic Rate ISDN (BRI)
B Channel
Basic Call State Model (BCSM)
Bearer Independent Call Control (BICC)
Bearer Protocol
Bearer Service (BS)
Big Data
Bit Rate
Border Gateway Protocol (BGP)
Breakout Gateway Control Function (BGCF)

C

Cable Entrance Facility
Cache Poisoning
Call Session Control Function (CSCF)
Call Control
Call Forwarding
Call Processing Language (CPL)
Call Routing
CAMEL Application Part (CAP)
CAMEL Service Environment (CSE)
Carrier Access Billing System (CABS)
Carrier Ethernet
Cause Code Mappings
Central Automatic Message Accounting (CAMA)
Centralized Message Distribution System (CMDS)
Central Office (CO)
Centrex (Central Office Exchange Service)
Channel-Associated Signaling (CAS)
Channel Service Unit/Data Service Unit (CSU-DSU)
Charging Data Record (CDR)
Continuous Integration & Continuous Deployment (CI/CD)
Circuit Switched
Class 4 Switch
Clear Channel Signaling (CLEAR)
Cloud Computing
Cloud Computing Architecture
Cloud Computing Security
Cloud Computing Services
Cloud Service
Co-location
Committed Information Rate (CIR)
Common Carrier
Common Channel Signaling (CCS)
Competitive Access Provider (CAP)
Competitive Local Exchange Carrier (CLEC)
Congestion Control
Connected Home
Connectivity
Constrained Application Protocol (CoAP)
Content Delivery Network (CDN)
Control Plane
Conventional Signaling (CS)
Conversational User Interface
Core Network (CN)
Customer Access Line Charge (CALC)
Customer Billing Services System (CBSS)
Customer Premise Equipment (CPE)
Customized Application Mobile Enhanced Logic
Customized Applications for Mobile network Enhanced Logic (CAMEL)
Custom Local Area Signaling Services (CLASS)

D

Data Center
Data Communication Equipment
Data Terminal Equipment (DTE)
D Channel (Delta Channel)
Denial of Service & Distributed Denial of Service (DoS & DDoS)
Destination Point Code (DPC)
Development and Operations (DevOps)
Diameter Edge Agent (DEA)
Diameter (Protocol)
Diameter Routing Agent
Differentiated Services Code Point (DSCP)
Digital Cross-Connect System (DCS)
Digital Loop Carrier (DLC)
Direct Inward Dialing/Direct Outward Dialing (DID/DOD)
Disk Operating System (DOS)
Distributed Denial of Service (DDoS)
Domain Name System (DNS)
Download Manager
Dual Homing
Dual Tone Multi-Frequency (DTMF)
Dynamic Host Configuration Protocol (DHCP)

E

E.164 Number Mapping (ENUM)
EC2
Echo Return Loss (ERL)
Elastic Compute Cloud
Enhanced Control, Orchestration, Management and Policy (ECOMP)
Enterprise Session Border Controller (eSBC)
Evolved Packet System (EPS)
European Telecommunications Standards Institute (ETSI)
E-UTRAN
Evolved Packet Core (EPC)
Explicit Congestion Notification (ECN)
Extended Superframe (ESF)
Extensible Authentication Protocol (EAP)
Extensible Markup Language (XML)
Exterior Gateway Routing Protocol (EGP)

F

FAX
Fax Over IP (FoIP)
Fax Server
Fiber Optic Communications
Fiber to the X (FttX)
Frequency Division Duplex (FDD)
Front End Optimization (FEO)

G

Gateway
Gateway Mobile Switching Center (GMSC)
General Packet Radio Service (GPRS)
Generic User Profile (GUP)
Gigabit Ethernet (GbE)
Global System for Mobile Communications (GSM)
GPRS Tunneling Protocol (GTP)
Ground Start (GS) Signaling

H

H.323
Hacktivism
Half-Duplex (HDX)
HD Voice
High-availability Seamless Redundancy (HSR)
High-Bit Rate Digital Subscriber Line (HDSL)
High Speed Packet Access (HSPA)
High Speed Serial Interface (HSSI)
Home Location Register (HLR)
Home Public Land Mobile Network (HPLMN)
Home Public Mobile Network (HPMN)
Home Subscriber Server (HSS)
Hybrid Cloud
Hypertext Transfer Protocol (HTTP)

I

Instant Messaging (IM)
IMS Authentication and Key Agreement (IMS-AKA)
IMS Charging ID
IMS Communication Service Identifier (ICSI)
IMS Credentials
IM Services Identity Module (ISIM)
Incumbent Local Exchange Carrier (ILEC)
Independent Telephone Company
Information Security
Infrastructure as a Service (IaaS)
Integrated Circuit Card Identifier (ICCID)
Integrated Digital Loop Carrier (IDLC)
Integrated Marketing Communications (IMC)
Integrated Services Digital Network (ISDN)
Intelligent Network (IN)
Intelligent Video Analytics
Interactive Voice Response (IVR)
Interconnection Border Control Function (IBCF)
Interconnection Facility
Interconnection Point (POI)
Interconnect Session Border Controller (I-SBC)
Interexchange Carrier (IXC)
Inter-IMS Network to Network Interface (II-NNI)
International Mobile Equipment Identity (IMEI)
International Mobile Subscriber Identity (IMSI)
International Switching Center (ISC)
Internet Engineering Task Force (IETF)
Internet of Things (IOT)
Internet Protocol (IP)
Internet Protocol version 4 (IPV4)
Internet Protocol version 6 (IPV6)
Internet Service Provider (ISP)
Inter Operator Identifier (IOI)
Interrogating Call Session Control Function (I-CSCF)
Interworking Function (IWF)
Inverse Multiplexing (IMUX)
IP Connectivity Access Network (IP-CAN)
IP Multimedia Services Identity Module (ISIM)
IP Multimedia Subsystem (IMS)
IP Packet Exchange (IPX)
IP Security (IPSec)
IP Multimedia Service Control (ISC-IMSC)
ISDN User Part (ISUP)
IP Transport Subsystem (ITS)

J

Java
JavaScript
JavaScript Object Notation (JSON)
Java Telephony Application Programming Interface (JTAPI)

K

Key Telephone System (KTS)
Kilobits per second (Kbps or Kbs)
KnowBot
Kubernetes (K8s)

L

Load Balancer (LB)
Load Balancing
Local Access and Transport Area (LATA)
Local Area Network (LAN)
Local Breakout (LBO)
Local Exchange Carrier (LEC)
Local Loop
Long Term Evolution (LTE)

M

Machine Learning
Machine to Machine (M2M)
Maximum Transmission Unit (MTU)
Media Gateway
Media Gateway Control Function (MGCF)
Media Gateway Control Protocol (MGCP)
Media Resource Broker (MRB)
Media Server
Media Streaming
Medium Access Control (MAC)
Mobile Application Part (MAP)
Mobile Applications
Mobile Broadband
Mobile Cloud Computing
Mobile Country Code (MCC)
Mobile Equipment (ME)
Mobile Network (MN)
Mobile Network Operator (MNO)
Mobile Originating (MO)
Mobile Station International ISDN Number
Mobile Station International Subscriber Directory Number (MSISDN)
Mobile Station (MS)
Mobile Terminating
MQTT Protocol
Mulitplexer (MUX)
Multi-Line Hunting Group (MLHG)
Multimedia Broadcast/Multicast Service (MBMS)
Multimedia Messaging Service (MMS)
Multimedia Resource Function Controller (MRFC)
Multimedia Resource Function (MRF)
Multimedia Resource Function Processor (MRFP)
Multiple Input Multiple Output (MIMO)
Multiple Input Single Output (MISO)

N

Non-Access Stratum (NAS)
Network
Network Access Identifier (NAI)
Network Address Port Translation (NAPT)
Network Address Translation (NAT)
Network Attached Storage (NAS)
Network Effectiveness Ratio (NER)
Network Functions Virtualization (NFV)
Network Operations Center (NOC)
Network Operators
Network Optimization
Network to Network Interface (NNI)
Next Unit of Computing (NUC)
NoSQL
Number Portability (NP)

O

On-Hook
Online Charging System (OCS)
Online Video Platform (OVP)
Open Compute Project (OCP)
Open Database Connectivity (ODBC)
Open Network Architecture (ONA)
Open Network Automation Platform (ONAP)
Open Services Architecture (OSA)
OpenStack
Orchestration Platform
Order and Service Management (OSM)
Original Equipment Manufacturer (OEM)
Outside Plant

P

Packet Data Network (PDN)
Packet Data Protocol (PDP)
Packet Switched/Packet Switching (PS)
Packet Temporary Mobile Subscriber Identity (P-TMSI)
Platform as a Service (PaaS)
Policy and Charging Control (PCC)
Private Branch Exchange (PBX)
Private Cloud
Private Mobile Network (PMN)
Proxy Call Session Control Function (P-CSCF)
Public Cloud
Public Globally Routable User Agent URI (P-GRUU)
Public Land Mobile Network (PLMN)
Public Service Identity (PSI)
Public Switched Telephone Network (PSTN)
Preboot eXecution Environment (PXE)

Q

QoS Class Identifier (QCI)
Quality of Service (QoS)

R

Radio Access Network (RAN)
Radio Access Technology (RAT)
Real-Time Communications (RTC)
Real-time Transport Protocol (RTP)
Real-Time Transport Protocol (RTP/RTCP)
Real User Monitoring (RUM)
Redundancy
Remote Authentication Dial-In User Service (RADIUS)
Request for Comment (RFC)
Ring-Down
Ringtone
Roaming
Robbed Bit Signaling (In-band Signaling)
Router

S

System Architecture Evolution (SAE)
Secondary Directory Number (SDN)
Secure Real-time Transport Protocol (SRTP)
Selective Forwarding Unit (SFU)
Self Optimizing Network (SON)
Service Capability Interaction Manager (SCIM)
Service Control Point (SCP)
Service Platform Trigger Points (STP)
Service Switching Function (SSF)
Service Switching Point (SSP)
Session Border Controller (SBC)
Session Description Protocol (SDP)
Session Initiation Protocol (SIP)
Session Initiation Protocol with encapsulated ISUP (SIP-I)
Short Message Service (SMS)
Signaling Connection Control Part (SCCP)
Signaling Gateway
Signaling Protocol
Signaling System 7 (SS7)
Signal Transfer Points (STP)
Signal Transport (SIGTRAN)
Signal Unit (SU)
Subscriber Identity Module (SIM)
SIP Application Server
SIP Client
SIP Trunk
Smart Home
Softswitch
Software as a Service (SaaS)
Software Defined Networking (SD-WAN)
SQL Injection
Stream Control Transmission Protocol (SCTP)
Subcarrier
Switched Network
Synchronous Communication

T

T.38 Fax
Talkback
Time Division Duplex (TDD)
Time Division Multiplexing (TDM)
Telecommunication
Telecommunication Device for the Deaf (TDD)
Telecommunications Relay Service (TRS)
Telecommunications Service Provider (TSP)
Telephony
Telephony Application Server (TAS)
Temporary Globally Routable User Agent URI (T-GRUU)
Temporary Mobile Subscriber Identity (TMSI)
Transmission Control Protocol (TCP)
Transport Layer Security (TLS)
Transrating
Trunk Group (TG)
Trunks
Trusted Computing Group (TCG)

U

Unified Communications as a Service (UCaaS)
Unified Communications (UC)
Unified Messaging System (UMS)
Uniform Resource Identifier (URI)
Uniform Resource Locator (URL)
Universal Call Distributor (UCD)
Universal Mobile Telecommunications System (UMTS)
Universal Service
Universal Subscriber Identity Module (USIM)
Universal Terrestrial Radio Access Network (UTRAN)
User Agent (UA)
User Datagram Protocol (UDP)
User Equipment (UE)
User Plane

V

Value Added Network (VAN)
Value Added Reseller (VAR)
Value Added Service Provider (VASP)
Value Added Service (VAS)
Video Optimization
Video over LTE (ViLTE)
Video Streaming
Virtual Network Function (VNF)
Virtualization
Virtual Machine
Virtual Machine (VM)
Virtual Private Network (VPN)
Virtual Private Server (VPS)
Visited Public Mobile Network (VPMN)
Visitor Location Register (VLR)
Visual Interactive Voice Response (VIVR)
Visual Voicemail (VV)
Voicemail System (VMS)
Voice Over IP (VoIP)
Voice over LTE (VoLTE)
Voice over WiFi (VoWiFi)

W

WAN Optimization Controller (WOC)
Wearables
Web Application Firewall (WAF)
Web Based Application
WebRTC
Wholesale Carrier
Wide Area Network (WAN)
Wideband Modem
Wireless Access Mode (WAM)
Wireless Mobility Management (WMM)

X

xDSL
XML Configuration Access Protocol (XCAP)