VoIP Definitions

The Complete VoIP A to Zs

Everything you need to know about VoIP, simplified.

Popular Terms

(NTP) Network Time Protocol

NTP is a protocol designed to synchronize the clocks of devices over a network. Accurate timekeeping is critical for VoIP systems, especially for logging and call handling.

A2P

A2P (Application-to-Person) Messaging automates SMS communication from applications to individuals (see A2P messaging providers and 10DLC). It is used for alerts, notifications, and marketing.

ABR

ABR (Available Bit Rate) dynamically adjusts data transmission rates based on network congestion, ensuring efficient and consistent VoIP call quality.

ACD

ACD (Automatic Call Distributor) intelligently routes incoming calls to the most suitable agent/department based on predefined criteria.

Active Directory

Active Directory (AD) is a Microsoft service that manages user identities, devices, and access permissions within a networked environment.

AHLDT

AHLDT (Average Hold Time) measures the average duration customers spend on hold before speaking with an agent, impacting customer satisfaction and call center efficiency.

ANI

ANI (Automatic Number Identification) automatically displays the caller’s phone number, helping call centers identify callers and personalize customer interactions.

ASR

ASR (Automatic Speech Recognition) converts spoken language into text, enabling voice commands, transcription, and hands-free communication in VoIP systems.

Asterisk

Asterisk is an open-source communication platform that powers VoIP systems, enabling call routing, IVR, and conferencing functionalities.