Introduction The 3CX Firewall Checker checks whether the ports needed to communicate with your VOIP provider are open and properly configured with STATIC Port mapping. If the firewall checker does not complete successfully, you will not ...
This information is relevant for installations that that are NOT using the default US prompt set. Customers that do not use the default US prompt set need to take additional steps when performing an upgrade.
Introduction 3CX Phone System frequently communicates across LANs and establishes calls between devices (softphones, hardphones, gateways, VoIP providers, and PBX bridges) which are located on different networks. The PBX communicates both with devices that are inside ...
Introduction HTTP provisioning of phone sets is useful for an administrator as it helps to automate the process of configuring the phone set for a particular extension. The administrator creates the extension as usual, and in ...
Configuring DID with a VOIP Provider When using a VOIP provider with DID’s you need to set these up as follows: Go to the VOIP provider account node via which the DID’s are routed. Select the VoIP ...
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.
How can I adjust the configuration for unsupported VOIP providers or gateways? 3CX performs extended tests with a number of VoIP Providers and Gateways
How to solve Source Identification issues The source of a call must be identified for security. This FAQ explains how 3CX Phone System identifies the source of calls by default and how you can adjust the ...
What is a FoIP FoIP – FAX over IP, is the technology used to allow faxing via the computer network.
It is possible for a user to make an outbound call via the Voicemail menu. Dial 999 -> Enter PIN -> Press 9 (for options) -> Press 3 (to dial an external number) -> Dial external ...
Copyright © 2025