6.3. Coder Information and Backward Compatibility

The GCEV_EXTENSION event with a parameter set ID of IPSET_MEDIA_STATE is used to signal that media has either started or stopped streaming in the transmit or the receive directions:

• If the parameter is IPPARM_TX_CONNECTED, then media has begun to stream in the transmit direction.
• If the parameter is IPPARM_RX_CONNECTED, then media has begun to stream in the receive direction.

The coder configuration is contained in the event data as an IP_CAPABILITY structure.

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