Connect 3CX Phone System with
AlienVoIP SIP Trunk
Looking for a clear way to configure 3CX with AlienVoIP? This guide explains the key setup flow for provider registration, SIP settings, codecs, outbound rules and extension checking before live usage.
Need help with a new setup, migration, registration issue or outbound call testing? Share your PBX details and our team can advise the next step for your business phone system enquiry.
Need 3CX and SIP Trunk Support for Your Business?
This page is written for business owners, IT administrators and system integrators who need to connect 3CX Phone System to AlienVoIP SIP trunk. It helps you understand the configuration path and prepare the information needed for faster support or quotation.
New Office Phone Setup
Suitable when your company wants to use 3CX with SIP trunk calling for office extensions, reception, sales team or customer support.
PBX Migration or Replacement
Useful when moving away from an old PBX, changing SIP provider or reviewing your current 3CX call routing setup.
Registration or Call Issue
Helpful when SIP trunk status, outbound calls, codec settings, extension registration or firewall routing needs to be checked.
Faster Enquiry Tip
When contacting AlienVoIP, include your 3CX version, hosting location, public IP or firewall setup, SIP trunk account status, number of extensions and the call flow you want. This helps the team understand whether you need configuration advice, SIP trunk activation, testing support or a new phone system quotation.
3CX Phone System Server Configuration Guide
Follow these key steps to review your 3CX setup with AlienVoIP SIP trunk. The screenshots below help your IT team identify the correct areas inside the PBX configuration page.
Provider Registration
Make sure the SIP provider is added correctly and the provider status is registered before proceeding to call testing.
General Settings
Proceed to the General tab and review the provider capabilities and registration settings based on your SIP trunk account details.
Configure Advanced Options
Review the advanced provider options and codec priority. In this guide, the codec order is configured with ilbc first, followed by G729.
Verify Remote Connections
Check the connection page and confirm the status shows registered. This should be verified before outbound call testing.
Setup Outbound Rules
Configure outbound rules so calls are sent through the correct AlienVoIP SIP trunk route.
Test Outbound Rule
Create a test rule to send any call starting with 0 to AlienVoIP for outbound call testing.
Extension Registration
Ensure your extension is properly registered. Extension registration should be checked before testing calls from a user phone or softphone.
What to Prepare Before Contacting AlienVoIP
Providing the right information at the beginning helps reduce back-and-forth messages and allows the team to understand your 3CX SIP trunk requirement faster.
Business Contact Details
- Company name and business nature
- Person in charge name
- Mobile number and email address
- Office location or branch location
PBX & SIP Details
- 3CX version and hosting location
- SIP trunk account status
- Number of extensions and concurrent calls needed
- Current issue, screenshot or call test result
How the Enquiry Process Works
A simple enquiry flow helps your request reach the right sales or technical person.
Send Your Requirement
- Share your company details and 3CX requirement.
- Include whether you need new SIP trunk service, configuration support or troubleshooting.
- Attach screenshots if registration or outbound calling is not working.
Get the Right Follow-Up
- The team reviews your requirement and setup condition.
- A sales or technical representative follows up for clarification.
- You receive the next recommended action for setup, testing or quotation.
Common 3CX SIP Trunk Questions
These answers help customers understand what to ask before starting a 3CX and AlienVoIP SIP trunk enquiry.
Can AlienVoIP help connect 3CX Phone System to a SIP trunk?
Yes. Customers can contact AlienVoIP for SIP trunk enquiry and configuration guidance for connecting 3CX Phone System to AlienVoIP SIP service.
What details should I prepare before requesting 3CX setup support?
Prepare your company name, person in charge, contact number, email, business location, 3CX version, PBX hosting location, SIP trunk account details and the issue or requirement you want to solve.
Can this guide be used for outbound call testing?
Yes. The guide includes outbound rule setup and a test rule example for sending calls starting with 0 through AlienVoIP.
What should I check if 3CX cannot register the SIP trunk?
Check the SIP account details, provider registration settings, network firewall, public IP, port settings and whether the PBX is allowed to connect to the SIP service.
Is this page only for technical users?
No. The page is written for business customers and IT teams who want to understand the 3CX setup flow before contacting AlienVoIP for assistance.
Need Help with 3CX SIP Trunk Setup?
Share your 3CX requirement, SIP trunk status and business contact details. AlienVoIP can help you review the next step for setup, routing, call testing or new SIP trunk enquiry.