3.1.2 Timers

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This protocol has the following RTP-related timers, in addition to those specified in [RFC3550] section 6.3:

  • Throttling mode timer: This timer is used by the throttling mechanism to establish how long a receiver stays in throttling mode. There SHOULD be a single throttling mode timer per RTP session, used for both SSRC and sequence number throttling. This timer SHOULD be set to 2 seconds, and MUST be less than or equal to this value.

  • Dominant speaker expiration timer: Receivers SHOULD have a timer that expires sometime after the last RTP packet was received, to avoid keeping stale dominant speaker information during silent periods if a mixer uses silence suppression. This timer SHOULD be set to 3 seconds. It MUST be greater than the maximum allowed P-time on the RTP session.

  • Participant time-out timer: This timer or the time-out algorithm in [RFC3550] section 6.3.5 MUST be used to time-out inactive participants. This timer SHOULD be set to 50 seconds. There MUST be one participant time-out timer per participant.