[Freeswitch-users] Resource used on server for conferencing

Hi, I am using flowroute to access incoming calls and then conference additional phones using flowroute SIP gateway. I would like to understand what resources are being used on the server that is hosting the conference calls. Now if flowroute is handling all the call what resources are being consumed on the freeswitch server. CPU, bandwidth, what else ? If these are cellphone versus landlines does it make any difference ? Please share some insight.