108 is still active thus control flow 300 continues until either the phone mcu 110 or the ip mcu 104 ceases hosting the audio conference i e the conference is terminated as indicated by step 318 it should be noted as will be apparent to one skilled in the relevant art s after reading the description here that control flow 300 as presented in fig3 assumes that there is an order to the phone mcu mixing and the ip mcu forwarding packets this is done for ease of explanation herein whereas in actuality these events are asynchronous and simultaneous as suggested above further as will also be apparent to one skilled in the relevant art s there may some delay between an active speaker becoming active on one mcu and before that active speaker is heard on the other mcu but it is symmetric the present invention i e architecture 100 control flow 200 control flow 300 or any part thereof may be implemented using hardware software or a combination thereof and may be implemented in one or more computer systems or other processing systems in fact in one embodiment the invention is directed toward one or more computer systems capable of carrying out the functionality described herein an example of a computer system is described the computer system represents any single or multi processor computer the computer system includes one or more processors the processor is connected to a communication infrastructure e g a communications bus cross over bar or network various software embodiments are described in terms of this exemplary computer system after reading this description it will become apparent to a person skilled in the relevant art how to implement the invention using other computer systems and or computer architectures the computer system can include a display.