Early-Media-Description AVP
The Early-Media-Description AVP (AVP code 1272) is of type grouped and describes the SDP session, media parameters and timestamps related to media components set to active according to SDP signalling exchanged during a SIP session establishment before the final successful or unsuccessful SIP answer to the initial SIP INVITE message is received. Once a media component has been set to active, subsequent status changes shall also be registered.
| AVP | Number | Reference | Start | Interim | Stop | Event | Group |
|---|---|---|---|---|---|---|---|
| [ SDP-TimeStamps ] | 1273 | 3GPP | Y | N/A | N/A | Y | SDP-Timestamps AVP |
| *[ SDP-Session-Description ] | 842 | 3GPP | Y | Y | N/A | N/A | N/A |
| *[ SDP-Media-Component ] | 843 | 3GPP | Y | Y | N/A | N/A | SDP-Media-Component AVP |