Remote AT&T devices not connecting to our cctv DVR thru the xfinity gateway.
Our security remote devices, iPads & iphon’s for five years have connected thru comcast / xfinity, router / modem ( gateway) with no issues. Now since 5G has been turned on in the area our internet connection from the remote devices via AT&T cellular thru the xfinity gateway to our cctv DVR will not connect. We are still able though, thru the our xfinity gateway Wi-Fi access the cctv DVR.
Could there be a handshake or gateway firewall setting between AT&T and the xfinity gateway ???