We use Google Analytics to measure the performance of our website. We do not store any personal data and your IP address is anonymised.
For registrations and calls to work correctly, you must ensure the following IP ranges are allowed through any local firewalls:
* 188.8.131.52/26 * 184.108.40.206/27 * 2a06:5a80::/64
And in particular, that port 5060 for SIP registrations, and range 10000-20000 for voice traffic are allowed.