9 Replies Latest reply: Nov 20, 2013 8:55 AM by saleawy RSS

Outbound firewall ports and protocols required for Wi-Fi calling to work

Does anyone have a link to official T-Mobile documentation about what firewall ports and protocols must be open in order for Wifi calling to work? My IT group is willing to open the necessary ports if I can provide T-Mobile generated documentation. 611 technical support had trouble even understanding the question, and it's really not uncommon for corporate guest wireless configurations to have a very limited number of open ports.