In this video, we will look into VoIP Calls in detail, explaining the messaging content and exchange process. Skills Covered Protocols used for VoIP Calls SIP and how it works SDP and negotiating media exchange parameters Example Message flows SIP exchange for Extension-to-Extension calls SIP exchange for Extension-to-External calls Review the full course of 3CX Phone System [...]
In this video, we will look into bridging multiple 3CX Phone System installations together, including using the 3CX Tunnel Protocol to help with NAT Traversal issues for bridge connections. Skills Covered Bridging Basics Configuring a Master Bridge Connection Configuring a Slave Bridge Connection 3CX MyPhone and Presence information across Bridge Connections Numbering Plans for [...]
In this video, we will go over general security concepts, attack and defense methods, and 3CX Phone System's built-in security features. Skills Covered 3CX Security and Network Security Extension security in 3CX Phone System PIN Numbers in 3CX Phone System Secure SIP (TLS) 3CX Anti-Hacking Features IP Blacklist Single IP Address IP Address Ranges Allowed Country Codes Encryptin [...]
In this video, we will discuss how to use and configure the 3CX Tunnel Protocol with 3CX Phone System, and an example configuring a Remote Extension to use the 3CX Tunnel Protocol. Skills Covered Overcoming Issues with the 3CX Tunnel Protocol 3CX Tunnel Protocol Integration within 3CX Phone for iPhone, Android, and Windows Configuring 3CX Phone to use the 3CX Tunnel Protocol Co [...]
In this video, we will go over the implementation of least cost routing across multiple lines, using outbound rules. Skills Covered Least Cost Routing Overview Dialed Number Format Basics Rules for Local Calls Rule for Local Calls in Long Distance Format Rule for Local Calls in International Format Rule for Local Mobile Calls Rule for Long Distance Calls Rule for International [...]
In this video, we will go over the process that system administrators should follow to customize and subsequently enforce provisioning templates. Skills Covered Supported Phones (General Info) Phone provisioning templates Template Customization Cloning and Renaming a Template Customize a Cloned Template Locate the Section to Customize Adjusting Settings inside a Phone Template [...]
In this Video, we shall discuss the different methods of setting up remote extensions with 3CX Phone System. Skills Covered Remote Extensions – General Information Pre-Requisites Two Ways to Provision Remote Extensions Remote Extension using STUN Remote Extension using SIP Proxy Manager The 3CX Tunnel Protocol – General Information Handling Common Issues Detecting SIP ALG issue [...]
There are situations when you are making an outbound call and you need to know which outbound rule is being matched for the call. When you are using multiple outbound rules, it might be difficult to figure out which rules are being used. You might need to determine this in order to configure priorities. You can find out which outbound rule is being used using the 3CX Server Act [...]
This guide illustrates how SIP, Audio and Data traffic is transmitted over the network when the 3CX Phone System is used. This will depend on the backend infrastructure and network topology, and this guide helps administrators understand how 3CX operates in different scenarios. If a combination of topologies is used, 3CX Phone System will route traffic as needed. Terms used in [...]
This is a guest post from 3CX Premium Partner, Charles Ambrosecchia of SigmaVoIP. In this article, Charles explains how to combat any attacks on your 3CX Phone System server. What should you do if someone attempts to hack your 3CX Phone System installation? A hacker will attempt to use your system to make calls to remote numbers (basically allowing the hacker to make calls a [...]
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