I have 2 phones, both have the Linkus Mobile App installed, both using the same extension (5345) on a P570. But only 1 app can log in at 1 time. Also, when I close the app, incoming calls will be forwarded to my mobile number, even though I am on company wifi, routed to the PBX lan.
On my extension settings, IP Phone Concurrent Registartions is set to 3 and Accept Push Notifications is selected. There is no hardphone for this extension. Only 2 softphones.
Before, I used a Grandstream Wave app on my phones, connecting to an Elastix PBX, and it worked fine. Incoming calls would ring on both. Even when I close the app, it will auto start, when a call comes in.