VoIP Glossary

5G is the fifth generation of wireless mobile network technology, delivering faster speeds, lower latency, and greater capacity.

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ACD (Automatic Call Distribution) intelligently routes incoming calls to available agents based on predefined rules.

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APaaS (Application Platform as a Service) provides cloud-based tools to develop, deploy, and manage application lifecycles.

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Auto-provisioning automatically configures VoIP endpoints with server settings, credentials, and preferences.

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BYOD (Bring Your Own Device) lets employees use personal smartphones and laptops for work communications.

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Call analytics collects and analyzes phone call data to provide actionable business intelligence insights.

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Cloud PBX hosts your business phone system in the cloud, eliminating on-premise hardware.

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A codec encodes and decodes audio or video for efficient transmission over IP networks.

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CPaaS (Communications Platform as a Service) enables businesses to embed real-time communication features into their applications.

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DID (Direct Inward Dialing) gives each user a unique phone number routed over shared VoIP trunks.

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E.164 is the ITU-T standard for international telephone number formatting used in VoIP systems.

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eSIM is a built-in digital SIM that allows remote activation of cellular plans without a physical card.

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Firewall traversal enables VoIP calls to pass through restrictive firewalls and NAT devices.

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FreePBX is an open-source management interface for Asterisk PBX, widely used by VoIP providers.

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G.711 is the foundational VoIP codec delivering uncompressed toll-quality audio at 64 kbps.

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G.729 is a bandwidth-efficient VoIP codec that compresses voice to 8 kbps with good quality.

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HD Voice uses wideband audio codecs to deliver richer, clearer voice calls over VoIP.

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An IP PBX routes calls using Internet Protocol rather than traditional telephone switching.

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IVR (Interactive Voice Response) lets callers navigate menus using voice or keypad input.

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Jitter is the inconsistency in packet arrival times that causes choppy or distorted VoIP audio.

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Latency is the round-trip delay in voice data transmission, directly impacting VoIP call quality.

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LinkUp by Acrobits is a turnkey white-label softphone app for VoIP service providers.

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MOS (Mean Opinion Score) rates perceived voice quality on a 1-to-5 scale.

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NAT traversal allows VoIP signaling and media to work correctly behind NAT routers.

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Number porting lets subscribers keep their phone number when switching VoIP providers.

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OTT (Over-the-Top) services deliver voice, video, and messaging over the internet without carrier involvement.

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A PBX (Private Branch Exchange) is a private phone system that routes calls within an organization.

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Provisioning sets up VoIP accounts, configures endpoints, and activates services for subscribers.

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Push notifications are alerts sent to a user's device from an app server, even when the app isn't actively open.

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QoS (Quality of Service) prioritizes VoIP packets on a network to ensure clear, uninterrupted calls.

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QR provisioning lets users scan a code to instantly configure their softphone with VoIP account settings.

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RCS (Rich Communication Services) is the modern messaging standard replacing SMS with rich media features.

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Rich messaging (RCS) extends SMS with multimedia content, read receipts, and interactive features.

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RTP (Real-time Transport Protocol) delivers audio and video streams during VoIP calls.

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An SBC (Session Border Controller) secures, routes, and manages VoIP traffic at network edges.

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SIP (Session Initiation Protocol) is the signaling standard used to establish, manage, and terminate VoIP call sessions.

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A softphone is a software-based phone app that makes VoIP calls from computers, smartphones, and tablets.

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SRTP encrypts VoIP media streams, protecting voice and video from eavesdropping.

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STUN enables VoIP endpoints behind NAT to discover their public IP for call connectivity.

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TLS encrypts SIP signaling, protecting call metadata and credentials from interception.

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UCaaS (Unified Communications as a Service) consolidates voice, video, messaging, and collaboration tools into a single cloud platform.

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Unified Communications (UC) merges voice, video, messaging, and collaboration into one platform.

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VoIP (Voice over Internet Protocol) enables voice calls to be made over the internet instead of phone lines.

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VoIP push notifications wake sleeping softphone apps to receive incoming calls reliably.

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WebRTC enables real-time voice, video, and data communication directly in web browsers.

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SIP trunking connects an on-premise PBX to VoIP services over the internet, replacing traditional phone lines.

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A white-label softphone is a fully brandable VoIP app that providers deploy under their own name.

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ZRTP negotiates encryption keys directly between VoIP endpoints for true end-to-end security.

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