Abstract: A conference server is configured to receive audio signals associated with active speakers at separate conference endpoints, and to mix the audio signals to form a mixed audio signal. The conference server is further configured to record a mixed audio track comprising the mixed audio signal, and to determine a relative loudness of each of the active speakers for given periods of time. The conference server is also configured to record a plurality of original audio tracks that each comprises the original voice of one or more of the active speakers before mixing, wherein the original voice recorded in each of the tracks at the given periods of time is based on the relative loudness of the active speakers.

Abstract: A conference server is configured to receive audio signals associated with active speakers at separate conference endpoints, and to mix the audio signals to form a mixed audio signal. The conference server is further configured to record a mixed audio track comprising the mixed audio signal, and to determine a relative loudness of each of the active speakers for given periods of time. The conference server is also configured to record a plurality of original audio tracks that each comprises the original voice of one or more of the active speakers before mixing, wherein the original voice recorded in each of the tracks at the given periods of time is based on the relative loudness of the active speakers.

Abstract: According to one embodiment of the invention, a method for use in establishing communications includes receiving an invitation for communication at a first device. The invitation for communication is devoid of video capability information. In response to receiving the invitation for communication, the method includes transmitting, from the first device, a signal other than an SDP signal. This signal includes video capability information. After transmission of the signal, the first device receives an offer and incorporates the video capability information included in the signal.