Configuring SIPURA SPA-3000 for 3CX Phone System

Follow these steps to set up a Sipura SPA-3000 VoIP Gateway with 3CX Phone System:

  1. Ensure that you have created the PSTN line in 3CX Phone System first. Take note of the Authentication ID field and the Authentication password that you have entered for the line connected to the VoIP Gateway.
  2. Connect the Sipura SPA-3000 gateway to the network and mains power supply. The device will boot up, and providing you have DHCP installed on your network, will obtain an IP address. To get the exact IP address, check the most recent DHCP lease, or alternatively use a network scanner to find a device with the string ‘Sipura’
  3. Now point your browser to the gateway’s configuration site: ‘http://’, where is the IP address leased by the DHCP server to the gateway.
  4. Once the page loads click on the “Admin Login” link on the top right hand side of the page. This will provide the basic administration configuration version of the interface. Now click on the “advanced” link on the top right hand side of the page. This will provide the advanced administration configuration version of the interface.
  5. Now click the “PSTN Line” tab on the top side of the page. This will show the PSTN Line configuration page.


    Screenshot xx – Sipura SPA-3000 gateway PSTN Line configuration

  6. Ensure “Line Enable” is set to “yes”.


    Screenshot xx – Sipura SPA-3000 gateway Proxy Registration, Subscriber, Audio Settings

  7. In the Proxy Registration section:
    a. Set the “Proxy” field to the IP address or FQDN of the server on which the 3CX Phone System is installed
    b. Set the “Register” field to “yes”
    c. The “Register Expires” field sets the interval at which the gateway device will renew its line registration with the 3CX Phone System Server. You can leave the value at its default setting.
  8. The Subscriber Information section represents the PSTN line connected to the gateway. Configure the line as follows:
    a. The “User ID” should have a name assigned to it. Choose a User ID that will not match a possible number; it also must NOT be blank. If this field is blank, or matches the caller’s number, the device will operate in 2-stage dialling mode. Choosing an alphanumeric User ID is a safe choice. Eg: “Sipura-SPA-3000” or “Outside Line”.
    b. In the “Display Name” field, enter a name for the line.
    c. Set the “Use Auth ID” field to “yes”.
    d. In the “Authentication ID” and “Password” fields, enter the ID and Password that you entered for the line in the 3CX Phone System Management Console. These fields must match the ID and password set for the line in the 3CX Phone System Management Console.
  9. In the Audio Configuration section, set the “Preferred Codec” field to “G711u”.


    Screenshot xx – Sipura SPA-3000 gateway Dial Plan, VoIP-To-PSTN Settings
  10. In the Dial Plans section, set the “Dial Plan 8” field to “(S0<:yyyy>)” where yyyy must be replaced with the ID that you entered for the line in the 3CX Phone System Management Console. For example, if the ID used was “10100”, the “Dial Plan 8” field must be set to “(S0:<10100>)”.
  11. In the VoIP-To-PSTN Gateway setup section:
    a. Set the “VoIP-To-PSTN Gateway Enable” field to “yes”.
    b. Set the “VoIP Caller Auth Method” field to “none”.
    c. Set the “One Stage Dialling” field to “yes”.


    Screenshot xx – Sipura SPA-3000 gateway PSTN-To-VoIP Settings
  12. In the PSTN-To-VoIP Gateway Setup section:
    a. Set the “PSTN-To-VoIP Gateway Enable” field to “yes”.
    b. Set the “PSTN Caller Auth Method” field to “none”.
    c. Set the “PSTN Called Default DP” field to “8”.
  13. Click on the “Submit All Changes” button at the bottom of the page to save your settings and restart the device. The other settings that were not discussed are optional and can be left as default.
  14. After the gateway has restarted, switch to the 3CX Phone System Management Console, and click on the Phone System -> “Line Status” (This is the default page). In the section “External Lines”, the PSTN line connected to the VoIP Gateway should be listed with a green status light.

VOIP Gateway Configuration Guides