SIP Trunk Setup: 3CX PBX

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  • SIP Trunk Setup: 3CX PBX
  • SIP Trunk Setup: 3CX PBX



    1. Select "SIP Trunks"

    2. Select + Add SIP Trunk

    3. Select Voxtelesys

    Select Country: US

    Select Provider in your Country: Voxtelesys

    Main Trunk No: Your Vox Number, see formatting below


    Voxtelesys supports National, E164 No Plus, and E164 calling formats for 3CX dialing, these can be adjusted in the portal if you want to change your calling format.

    National: 5558675309

    E164 No Plus: 15558675309

    E164: +15558675309

    • E164 is required for SMS on 3CX

    4. Fill in Authentication with the information provided by Voxtelesys

    Registrar/Server/Gateway Hostname or IP: 3cx.pstn.voxtelesys.net

    Number of SIM Calls: Call limit with Voxtelesys

    Type of Authentication: Register/Account Based

    Authentication ID (aka SIP User ID): Provided by Voxtelesys

    Authentication Password: Provided by Voxtelesys

    • Note: Voxtelesys also supports IP authentication.

    If you need help configuring your trunk or inbound numbers check out the guides below! More Voxtelesys Portal Guides here!

    For more 3CX Guides, click here!

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