I am working in a call centre where have a online contact form, when it submits it sends the data directly to the dialler and is then called almost instantly by our agents.
The problem we have is recently our dialler got hacked and we had to increase our security. We had to whitelist any IP addresses that wanted to access it externally.
Since this has happened the form does not send any data in to the dialler.
The website is hosted on Namesco. We have whitelisted the IP address for the Namesco server (where I assume the PHP script is run) and also the IP address for our website where the form is hosted.
None of the above has solved the issue. We now have no idea on what IP address to whitelist on the router to enable the form to start feeding the data in to the dialler again.
We have no idea what to do fix the issue. All help or advice is highly appreciated.