Does 3CX Support SIP trunking/ SIP trunks?

3CX Phone System supports the use of SIP trunks / SIP trunking. To create a SIP trunk:

1. Go to the 3CX Management console.
2. Click "Add VOIP provider".
3. Select a pre-configured SIP trunking provider or Generic SIP trunking provider.
4. Follow the steps to complete SIP trunking set-up.

General 3CX Phone System FAQs 

• How do I disable the dual Ring Tone?
• Can hotels with Micros Fidelio use 3CX Phone System?
• How can I translate the Prompt Sets?
• What phones, gateways and firmware have you tested 3CX Phone System V5.1 with?
• How can I setup integration between 3CX and Salesforce.com?
• How can I view SIP traffic with a Network Capture tool?
• Is Microsoft ISA server supported as a firewall?
• How do I configure a CISCO router for to allow connection to a VOIP provider?
• Why does 3CX require static port mappings (Full Cone NAT)?
• What operating systems does 3CX Phone System support?
• How can I use the 3CX Tunnel with a SIP hardphone?
• How do I configure my Linksys router for 3CX Phone System?
• How to use fax if using multiple network interfaces
• How can I localize 3CX Phone System?
• How does Phone provisioning work?
• How do I create a phone provisioning template?
• How does 3CX Phone System decide whether a call is internal or external?
• What is the firewall checker and why do i need it?
• What is the cause of Installer error 2738, when installing 3CX?
• How to solve Source identification errors
• What is a SIP domain and how do I configure it correctly?
• How can I launch a call from a web based CRM package?
• How does 3CX know its an external extension?
• 3CX Phone System Commercial & Free editions support page
• How can I adjust the configuration for unsupported VOIP providers or gateways?
• How do I configure direct SIP Calls?
• Configuring Exchange Server 2007 Unified messaging with 3CX Phone System
• What SIP Phones can I use with 3CX Phone System?
• What VOIP Gateways can I use with 3CX Phone System?
• Does 3CX VOIP Phone System work with Vonage?
• How to request support from 3CX
• How to convert a Cisco 7940 from SCCP to SIP
• What VOIP Providers have you tested 3CX Phone System with?
• Build History
• Does 3CX Phone System work with BroadVoice?
• Analyzing a SIP call