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How to configure Failover by DNS for DaySaver

How to configure Failover by DNS for DaySaver

This document outlines steps that are required to configure failover by DNS for DaySaver.

Created: October 2021

Updated: January 2026

Permalink: https://wildix.atlassian.net/wiki/x/IyDOAQ

DaySaver documentation: https://wildix.atlassian.net/wiki/x/7wbOAQ

  1. First of all, you need to reset the DaySaver:

    • Open the DaySaver web interface 

    • Go to System -> Backup/Restore/Upgrade -> Backup/Restore

    • In the section Reset to defaults, tick off all the options and click Reset

Important: If DaySaver firmware is lower than v. 2.53.4.33, before proceeding with the configuration, go to DaySaver web interface -> Network Settings -> disable the option Disable Private Internets(RFC2918) DNS responses -> save the settings, and reboot the device. 

  1. Check the provisioning file /rw2/etc/provision.conf and in case it contains the parameter FailoverByDns=yes, change its value to ‘no’: FailoverByDns=no, consult the documentation for details: Provisioning Custom Settings

  2. Provision DaySaver to PBX in an automatic mode (Auto-provisioning), documentation: Provisioning of Wildix devices - Admin Guide

Note: Sometimes you may need to wait for up to 5 minutes before DaySaver gets provisioned. 

  1. Configure the following settings in the WMS:

  • In WMS -> Devices, select the DaySaver and click Edit

  • Fill out DNS server fields as mentioned below:

    • DNS Server: enter the IP address of the Main PBX 

    • Secondary DNS: enter the IP address of the Failover PBX

  • Enable the checkbox Use received IP and click Save

  • Click Configure/ Sync the device for the DNS settings to apply

  • Wait for 1 or 2 minutes and go to DaySaver web interface and reboot the device

  1. In the provisioning file /rw2/etc/provision.conf, add the parameter FailoverByDns=yes and the section [daysaver]

  2. In WMS -> Devices, click Configure/ Sync the device again. The device should reboot. If it doesn’t, reboot it from its web interface

  3. Check SIP configuration on the web interface of the device: the SIP Server Address and Outbound Proxy Address fields should contain the domain name auto-wildixin.com