Welcome to the community!
Please correct me if I am wrong from what I understand the Smart TV's connection to the Wi-Fi disconnects whenever you receive a call via VPN.
Where do you receive or what device(s) is used in taking VPN calls?
Does other device(s) affected with the dropouts when you answer VPN calls?
I'd like to check the status of your service. Please PM me your account details (Username/Customer ID together with the address on file).
In case you need a reference: How do I private message (PM) in the community
Thanks for sending me your details. We ran an initial test to the service it shows no line issue. For us to identify what causing your Smart TV's disconnection we'd like to know what device is used for VPN calls.
Thanks for the details.
Thanks for the confirmation. This issue seems to be weird because the connection of your laptop should not be affected by Wireless Interference of the Smart TV. We ran a series of test to the service it shows no network issue causing this dropout.
Unfortunately we do not have troubleshooting information related to the Smart TV troubleshooting and to the VPN service that may help to this issue. We recommend to contact to the VPN support to get details or to identify what is causing dropouts with your Laptop since it only occur when the VPN call is being used on the laptop.
In the event that their investigation result shows, that it is a Wireless Interference causing the laptop to drop out we did an article that you may find helpful.
Wireless Channel on your modem - what is it and why should I change it?
Note: This article will only affect the device(s) connected via Wi-Fi.
Let us know should you require further assistance.