FREE 14 DAY TRIAL – Full Access | No Payment Details required

Logo of the company "ninjas" with a stylized ninja mask icon.

VoIP Glossary


Commonly Used Terms in VoIP

Still have questions? We’ve got answers. Email us or give us a call.

  1. VoIP (Voice over Internet Protocol)
    A technology that allows voice and multimedia communications to be transmitted over the internet using IP (Internet Protocol) networks.
  2. IP (Internet Protocol)
    A set of rules that govern how data packets are transmitted over the internet.
  3. SIP (Session Initiation Protocol)
    A signaling protocol used for establishing, modifying, and terminating VoIP communication sessions.
  4. RTP (Real-Time Transport Protocol)
    A protocol used for the real-time transmission of audio and video data over IP networks.
  5. PBX (Private Branch Exchange)
    A private telephone network used within an organization to manage internal and external calls.
  6. Hosted PBX
    A cloud-based PBX service where the PBX infrastructure is hosted and maintained by a third-party provider.
  7. SIP Trunking
    A method of using SIP to connect an organization’s PBX to the Public Switched Telephone Network (PSTN) via the internet.
  8. ATA (Analog Telephone Adapter):
    A device that converts analog telephone signals to digital to enable VoIP calls with traditional telephones.
  9. Softphone
    A software application that allows users to make phone calls over the internet using a computer or mobile device.
  10. Codec (Coder-Decoder):
    A software or hardware algorithm used to compress and decompress audio and video data for efficient transmission.
  11. QoS (Quality of Service)
    Techniques used to prioritize and manage network traffic to ensure reliable and high-quality VoIP calls.
  12. Latency
    The delay between sending data and receiving a response, which can impact real-time communication quality.
  13. Jitter
    Variability in packet arrival times, leading to audio distortions in VoIP calls.
  14. Bandwidth
    The maximum data transfer rate of a network, influencing the number of simultaneous VoIP calls that can be supported.
  15. VoIP Gateway
    A device that converts voice traffic between the PSTN and IP networks.
  16. VoIP Phone
    An IP-based phone designed specifically for VoIP calls.
  17. E999 (Enhanced 999)
    A service that automatically provides emergency responders with a caller’s location information during VoIP emergency calls.
  18. Voicemail to Email
    A feature that sends voicemail messages to the user’s email inbox for easy access.
  19. Virtual Number
    A phone number that is not tied to a specific physical line, allowing users to receive calls on multiple devices.
  20. WebRTC (Web Real-Time Communication)
    A technology that enables real-time communication directly through web browsers without the need for additional plugins or software.
  21. DTMF (Dual-Tone Multi-Frequency)
    The tone system used for transmitting digits during phone calls, often for interactive menu systems.
  22. Auto Attendant:
    An automated voice menu system that directs incoming calls to the appropriate extensions or departments.
  23. Call Queue:
    A waiting line for incoming calls, often used in customer support or call center settings.
  24. Unified Communications
    The integration of various communication tools, such as voice, video, messaging, and collaboration, into a single platform.
  25. BYOD (Bring Your Own Device)
    A policy that allows employees to use their personal devices for work-related communications, including VoIP calls.