We have an existing database that is a MySQL backend and an Access front end. It has served us well for many years. We are now extending this to include touchscreen monitors and linking the database to a couple of web applications. One function I would like to have is to use the touchscreen to click on a client, then click on a "call" button. This should be able to use some kind of command-line call from VB in Access to launch or control some VOIP app to place a call (the monitor will have speakers and I can mount a mic on top of the monitor).
I suppose what I need is suggestions for a VOIP app/service/software that can place a call over the internet to a mobile or landline that can be controlled, or at least can be directed to place a call from the VB in Access. Of course free would be great! But I highly doubt that is going to happen so lets say it needs to be reasonably affordable.
If you also happen to have examples of calling that app from VB that would be a bonus!