Skills Covered by this Module

What devices or providers are 3CX-Supported, and why.
What devices or providers are Vendor-Supported, and why.
What devices or providers are Unsupported, and why.
Types of issues you may encounter.
The Server Activity Log …

The 3CX Voice Application Designer (VAD) is a powerful tool for creating voice applications quickly and easily, without needing to have great programming or telephony skills.

Introduction
This chapter gives you an overview of how a call is established within 3CX and how you can trace through these steps by reading the server activity log. The Server activity log can be accessed …

When using a virtualized operating system and 3CX Phone System, you may experience Stuttering voice quality if you have not configured your virtual environment correctly. This article explains how pm timers on the machine may …

The 3CX Phone System IVR service is based on VXML and therefore integrates with the web server that you have chosen to use with 3CX. If there are problems with the web server integration, the …

This article helps you recover from Backup and Restore Errors including some tips to make this operation quick and seamless. When a new major version is released, it is recommended to install the latest version. …

Introduction
This article describes how an extension or a gateway line registers itself with the PBX Server to make itself available for making and receiving calls, and how the PBX Server will register itself with a …

To uninstall any MSI installation that fails to uninstall itself for whatever reason, use the MSI Cleanup Utility:
http://download.microsoft.com/download/e/9/d/e9d80355-7ab4-45b8-80e8-983a48d5e1bd/msicuu2.exe
This version of Windows Installer CleanUp Utility works correctly in all 32-bit and 64-bit versions of Microsoft Windows.
The …

If the Media Server needs to allocate a port for media transmission, and cannot bind, it will generate a log message such as:
MediaServerReporting:InitEndPoint [MS003003] C:179.1: RTCP socket 10.0.0.173:7023 binding failed with error code 10048
This is …

This document describes how to fix and solve Internet Explorer Script Errors that come up in the 3CX Management Console every time one of the following actions is performed:

Uploading an audio file to a Digital …

This document describes how to resolve an issue when you try and access the 3CX Management Console or the 3CX MyPhone Portal and instead of getting the standard login screen, you see a blank white …

When using 3CX with Cassini, you may encounter situations where the Web Interface or the Web Service stops running and you have to restart the 3CX services to get it running again, or where the …

This document describes how a SIP call is established in 3CX Phone System, and what events will be written to the ‘Server Status’ page in the 3CX Management console. Using this call flow description, and …

Error 2738. Could not access VBScript run time for custom action.
This error usually appears on a system during some installations because Visual Basic Script (VBScript) is not installed or has been disabled. …

To troubleshoot or analyze a particular problem, it is often handy to take a closer look at the actual SIP traffic being sent to and from 3CX Phone System or the 3CX VOIP client.

For example:

You …