Auxiliary Position Sample Clauses

Auxiliary Position. The auxiliary positions are typically used for two purposes: local 3-way audio conferencing and audio and video presentation(aka auto-collaborate). These functions are not always used in a call, and hence the availability of these positions dynamically changes within the TIP multiplex. Note if a TIP device is performing both functions the auxiliary audio stream is a mix of the presentation audio and the conference sources. With respect to audio, TIP endpoints will typically offer to receive an auxiliary position stream. They will transmit an auxiliary position stream, when one of the functions that require it becomes active. A new MUXCTRL packet will be sent to the peer, and assuming the peer offers to receive the auxiliary position, the media stream will be transmitted. With respect to video, a TIP endpoint will either offer to transmit or receive the auxiliary position, but not both simultaneously. The TIP model is that there is only one active presentation in a call at any given time, and the recommended user experience policy is that the last unit to assert a new, active source should be given the floor. Hence, a TIP endpoint can send a number of mid-call MUXCTRL packets to update the availability of the auxiliary position video transmitter and receiver, given the user’s actions with respect to enabling and disabling the presentation video at that endpoint. Only one presentation requestor (MUXCTRL with auxiliary position transmitter enabled), is sent a MUXCTRL from a TIP MCU, which makes the auxiliary position receiver at the MCU available. All other TIP endpoints receive a MUXCTRL, which indicates that the auxiliary receiver position is not available at the MCU peer. When the current presenting endpoint releases the floor (MUXCTRL with auxiliary position transmitter disabled), then the MCU will allow the next most recent presenter to regain control of the floor, by sending that endpoint a new MUXCTRL which indicates availability of the auxiliary position receiver at the MCU. The new endpoint can either transmit or indicate that it is no longer interested in transmitting auxiliary video (via MUXCTRL).