I am looking to use a Soft Phone on my Galaxy S9.
For this to work reliably, I will need to connect to my office PBX using a VPN.
My question is how to best achieve this.
I would only want the VPN to be used for the VOIP/SIP application, and nothing else on my smart phone.
I have been seeking for VOIP apps that allow SIP and have a built in VPN, but not having luck there.
I have also been testing using separate VPN, but can't seem to make it only operate for the Soft Phone.
Hoping to get some ideas on this forum.
Thanks for any tips or assistance.