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Video Conferencing Trouble Shooting Guide

In this article, we will go through with various problems and how to solve basic video conferencing hardware issues.

First and foremost, video conferencing hardware remains one of the most critical asset in your inventory which is used and at-times abused by users. It's however very natural for video conferencing hardware like any other electronic or IT device to face issues. In this article we will find out what general issues we face and how to trouble shoot the video conferencing hardware.


No display remains one of the most common video conferencing issues. However it's resolution remains easy. Please do the following steps:

  1. Check AV settings. Check HDMI display settings are rightly configured in your display unit.

  2. If, it's not working please ensure that you restart your unit and if the issue persist,

  3. Try replacing HDMI cable. Around 80-90% of the problems remain display issues which are minor.


Most common reason for this is network firewall either within your own network or via ISP.

Firewall Port usage:

You might require the below detailed information when configuring network equipment for video conferencing.

NOTE: Please bear security in mind before opening all the above ports for a unit on an external IP / Internet !

As an example to establish a basic H.323 call between 2 End Points the following ports are required:

  • TCP 1720 for the initial call setup

  • TCP 49152 => 65535 for additional signalling

  • UDP 16384 => 32764 for the media between the two endpoints

The above is just a basic guideline and additional ports are described below and ports may vary if Desktop or Mobile clients are being used.

NOTE: Always check the Release notes or Admin Guides for ports being utilized!

For basic SIP troubleshooting please check => here <=

The following tables show IP port usage.

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