CallBlocker

If you're looking for a software that won't tie up any of your telephone lines, this one is worth considering. With its efficient design, you can use it without worrying about any disruptions. The best part is that there are one or two configurations that should work for everyone, making it easy to set it up and start using it right away. And if you encounter any issues while using the software, free support is available to help you out.

However, it's important to note that this software is only designed for use in the US. So, if you're located outside of the US, this may not be the right software for you. But if you're in the US and looking for a top-notch software that won't disrupt your phone lines and comes with great support, this is definitely worth checking out.