Full Duplex in Video Conference: Everything You Need to Know

By The NEARITY Team2023-03-22 15:44:52




Remote Device Management



Free Noise Cancelling App

Video conferencing has become a crucial part of modern communication. Whether it's for business meetings or remote work, video conferencing enables us to connect with people from all over the world in real-time. One of the essential features of video conferencing is full duplex communication.


What’s the full duplex communication?

Full duplex communication refers to the ability to transmit and receive data simultaneously. In other words, it allows two or more parties to communicate in real-time without having to take turns speaking or listening. Full duplex is in contrast to half duplex communication, which only allows for one-way communication at a time.


Half-duplex communication is common in traditional phone systems, walkie-talkies, and other similar devices. In these systems, only one person can talk at a time, and the other person has to wait for the first person to finish before they can respond. This can lead to awkward silences, misunderstandings, and frustration.

Simplex mode refers to a type of transmission mode that enables unidirectional communication, where information flows in one direction only. This means that only one device can send data through the communication channel, while the other device can only receive it. In other words, one device acts as the sender, while the other acts as the receiver, but they cannot both send and receive information simultaneously.


In video conferencing, full duplex is achieved through advanced audio and video codecs and network infrastructure that allows for real-time data transfer. The codecs used in video conferencing compress and decompress audio and video data to enable high-quality transmission with low latency.



Half duplex vs Full duplex

In half-duplex mode, each station has the ability to both transmit and receive data, albeit not simultaneously. While one device is transmitting, the other is only capable of receiving, and the roles are reversed vice versa. Half-duplex mode is implemented when there is no requirement for two-way communication to occur at the same time. This mode permits the full channel capacity to be utilized for each direction.


Full duplex, on the other hand, enables real-time, natural communication that is vital for effective video conferencing. It allows for uninterrupted conversation flow and reduces latency, resulting in a more productive meeting.

How does full-duplex work?

Full duplex communication is achieved by using two separate channels, one for transmitting and one for receiving. Each party has their own channel to transmit their voice, and each party can hear the other party's voice on a separate receiving channel. This means that both parties can talk and listen at the same time without any interference.


Why You Need a Full Duplex Speakerphone?

Full duplex communication in video conferencing has many benefits, including:

  • Faster Communication: Full duplex enables real-time communication, reducing delays and speeding up conversations.

  • Improved Collaboration: Full duplex enables natural conversation flow and reduces latency, resulting in more productive and effective collaboration.

  • Enhanced User Experience: Full duplex enhances the user experience by providing high-quality audio and video transmission, reducing frustration and increasing engagement.

If you're looking for a video conferencing product, we highly recommend NEARITY A20 conference speakerphone. With full-duplex, A20 enables simultaneous two-way communication, allowing for natural and engaging conversations in remote meetings.



In conclusion, full duplex communication is an essential feature of video conferencing that enables real-time, natural communication. It is achieved through advanced audio and video codecs, noise and echo cancellation, and bandwidth management. Full duplex in video conference will improve collaboration and enhance user experience in remote meetings.


Read More

1.Using Echo Cancellation Speakerphones for Zoom Meetings

2.How to Choose the Virtual Meeting Tech for Remote Team

3.Reverberation and Dereverberation Effects and Solutions


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