If you change tone setting on the hardware config page e.g. to uk, then zaptel fails due to the software writing duplicate entries e.g. fxsks=1 into zaptel.conf. Removing these entries doesn't appear to resolve the issue. The best method to date is to use vi and edit the file directly.

To perform this process:

• root:> cd /etc
• root:>vi zaptel.conf

For UK settings amend as detailed below:

loadzone = uk
defaultzone=uk

reboot