A method performed by a system of a communication network includes obtaining digital representations of speech detected from communication devices connected to a teleconference, and receiving a request for a parallel discussion from a first of the communication devices with a subgroup of the communication devices. Further, the system sets up a parallel discussion group for the first communication device and the subgroup of communication devices, provides the digital representations of speech of the first communication device and the subgroup of communication devices only to the devices of the parallel discussion group so that each device of the parallel discussion group is able to play back the digital representations of speech of the other devices of the parallel discussion group, and provides the digital representations of speech of the plurality of communication devices except the first communication device and the subgroup of communication devices.