We have different phone groups. When the phone rings and one member of the group picks up the phone, the other members of the group receive missed call notifications. They should not receive the notification unless all members do not pick up the phone.
When a user's phone rings, their mobile or PC app also rings. If they pick up the phone on their desk phone, then the app on their mobile phone or PC shows a missed call. If they pick up the phone on their mobile phone or PC , then the desk phone shows a missed call notification.
Ideally, the missed call should only appear if the call was actually missed. As stated above, the calls are missed, they are just being picked up on different devices. This will be an extremely annoying and inconvenient issue if it is not resolved.