[Freeswitch-users] Don't want to display ringing BLF

We have a group of 5 phones currently configured in a ring group that all have BLF keys monitoring each other. The problem is that when a call comes in, all of the BLF lines flash and no one can tell who is actually on the phone. Can anyone think of a configuration where all five phone can ring on an incoming call, they can see if the other phones are in use, and ringing is ignored? Thanks, Rob