First, I found this forum by google so I'm new here.
I need help with the following problem: I have a phone (phisically have it) that only allows 0800 numbers. Its not any office or business phone, just one old hardware that I acquired.
I would like to use it as a regular phone so I would like some solution that would strip the first 3 digits of anything I dial. For example: If I dial 0800123456789 the number that would go through the network should be 0123456789/
Can I find some hardware that would do that? Like a raspberry pie or arduino? or anything else?
Any help is apreciated