A softphone is simply an  application installed on your mobile phone that runs through your Internet connection, typically installed on your PC, laptop or tablet.
Being encrypted softphone is a much more secure way to communicate, keeping all of your conversations private.

Encrypted Softphone – Never Too Secure

By installing an encrypted softphone on your laptop, PC or tablet, you can make Encrypt-Phone over your Internet connection.
This will allow you to communicate to any outside line with the knowledge that your end is secure.

Protect Your Calls

Of course, just because you are using an encrypted softphone does not mean
that the person on the other end is communicating with an encrypted device.
Make sure that he/she understands the importance of having encryption on his/her end of the call.
By doing so, you can be assured that your secrets are kept safe.