Method to transfer a communication session to a mobile device, including: receiving by use of a first communication channel an information message comprising an identification of the communication session and an identification of a communication client hosting the communication session; sending by use of a second communication channel a join request; joining the communication session; and sending by use of the second communication channel a confirmation message confirming the transfer of the communication session. Furthermore, a method to transfer a communication session from a mobile device to a nonparticipating computer, including: receiving by use of a first communication channel an information message comprising an identification of the nonparticipating conference-enabled computer; sending by use of a second communication channel a request to push the communication session to the nonparticipating computer; receiving a confirmation; and optionally closing the communication session on the mobile device.