Originally Posted by Damo 2k9
Company recently deployed a VoIP system through Blueface, mix of desk phones and softphone clients. Currently using Blueface iOS Softphone client, but after a short amount of time out of the app, the line is showing as 'inactive' on the Blueface UC, for all softphone users.
I have asked the supplier for any settings to change etc, I have searched online etc and unfortunately it seems to be an iOS thing. The app cant be included in the 'Background App Refresh' setting, I have added it to 'Always allow' in screen time but to no avail. Any ideas?
That's pretty poor by Blueface to be honest. Its been the case since IOS 11 and also on recent Android releases that apps cant maintain a background connection to stay active (hence the experience you are seeing). This was done correctly to protect battery usage.
All decent VoIP providers have since upgraded their apps to work in a different way. The recommended model is that the app uses a push message mechanism to wake the app when an inbound call is coming in.
Many of the independent VoIP apps have implemented this also using their own proxy SIP server to do the push messaging. Bria Mobile is the best example of this.