Morning all,
I'm trying to set up wifi calling at my workplace and believe there are ports being blocked on our firewall that are needed to facilitate this.
So far I have unblocked UDP 500 and UDP 4500 for the VPN side. However, this has not made any difference and wifi calling does not even show the logo or attempt to connect on my phone (tried switching on and off, toggling airplane mode etc).
This is definitely working as I have managed to get Wifi Calling working in another office I work at by unblocking the two ports above.
At home wifi calling also works instantly, so there is definitely no issue where the handset is concerned.
My problem is trying to pin down what else is being blocked - I have tried to trace this in the office where this works, but have not found anything concrete.
There is literally ZERO information about this online - other networks like EE publish this information on their forums so why cant o2?
Has anyone been successful with this?
Kind regards
Richard
