To take advantage of Internetport's SIP trunk service with your 3CX phone system, you need to follow a simple step-by-step guide. Here you'll get help with retrieving necessary SIP information, configuring the trunk, and testing both incoming and outgoing calls.

Prerequisites

  • 3CX is installed on your server.
  • SIP trunk is activated with Internetport via the customer portal.

Retrieve SIP Information from portal.internetport.com

  1. Step 1: Log in to the Customer Portal

    Go to customer portal and log in with your credentials.

  2. Step 2: Navigate to Services

    Click on "Services", select "My Services" and open your active SIP trunk.

  3. Step 3: Retrieve Configuration Information

    Go to the "Configuration Information" tab to retrieve SIP username, password, and other necessary information.

Create New SIP Trunk in 3CX Admin Panel

  1. Step 4: Open 3CX Admin Console

    Start the 3CX Management Console on your server.

  2. Step 5: Add New SIP Trunk

    Go to "VoIP Providers", click on "Add" and select "Generic SIP Server".

Configure Trunk Settings (Server, Auth, Codecs)

  1. Step 6: Fill in Server Information

    Enter "sip.internetport.se" as SIP Server and port 5060 for UDP.

  2. Step 7: Authentication Credentials

    Fill in the SIP username and password from the customer portal under "Authentication".

  3. Step 8: Select Codecs

    Select desired codecs such as G.711 a-law (PCMA) or G.729 under "Codecs".

Add DID Numbers (Incoming Numbers)

  1. Step 9: Add DID

    Go to "DID Numbers", click on "Add" and enter your incoming number.

Configure Outbound Call Rule (Outbound Rule)

  1. Step 10: Create Outbound Rule

    Go to "Outbound Rules", click on "Add" and configure the rule for outbound calls.

Test Incoming and Outgoing Calls

  1. Step 11: Test Outgoing Calls

    Dial a test number to verify that the outgoing connection works.

  2. Step 12: Test Incoming Calls

    Provide someone with your DID number and ask them to call to test incoming calls.

Troubleshooting

  • If the trunk does not register, check the authentication credentials and server settings.
  • For audio/RTP issues, verify that the selected codecs are supported by both 3CX and Internetport.
  • NAT problems can be resolved by configuring the STUN server "stun.internetport.se" in your 3CX settings.