I’ve seen this question posted previously, but never with a solution so I’ll try my luck here.
I have a mixed environment of IP phones, IP Dect cordless phones, WiFi phones and analog phones with gateways. No matter what setting I change, the phones will never ring more than 60 seconds which leads me to believe that it’s a PBX problem.
The default ring time is 22 seconds. This works. When I manually change the ring time on an extension or ring group it extends to 60 seconds and disconnects.