What ports & address should an end-user open in their network to be compatible with Ringotel?

Depending on the organization's region, a user should communicate with one of the Ringotel servers. You can access the list of Ringotel IPs and regions through this link:

https://ringotel.atlassian.net/l/c/QQmbEUGN

Furthermore, the standard HTTPS port and the full RTP ports range must be open for users for outbound connections:

443 (TCP)

1024-65535 (UDP)