Echolink for Windows allows multiple connections at once. Multiple stations can enter/leave the group at anytime. I understand QTEL does not supported this feature. To be specific multiple stations connected to my QTEL client could see and hear eachother. Each could transmit in turn and be heard by the other stations. There could also be a "Doubling" warming message if two stations atttempt to transmit. Addition of the ability to add multiple stations to a QSO would be an enhancement and would make QTEL more usefull.