Dynamic Caller ID With 3CX v15 SP4

Outbound caller ID is handled differently in 3CX v15 than in previous versions. Before, outgoing calls would automatically use the extension's caller ID, whereas this new version, it will automatically use your Trunk #. To fix this, it is necessary to update an outbound parameter. Without this small step, your Trunk # will show up as your caller ID on all outbound calls.

To change this, first ensure at least one of the extensions that has its own caller ID has a proper value set:

Then, go to the SIP Trunks tab on the left toolbar, double-click on your trunk, then select Outbound Parameters from the top toolbar.

Finally, change the dropdown value for the From: User Part field to "OutboundCallerId" Outbound caller Id taken from Extension settings in management console. Once you do this, all outbound calls will take on the caller ID value for the originating extension.

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    Triohm Support

    Thank you for your reply, how much times does it take to reflect the change?

  • Avatar
    David Lemcoe Jr.

    The change will take place immediately. Feel free to contact if you need any help!

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