Early Media Call (recording not required)

The following illustration shows an early media call using selective recording with recording optional.

• UA-A sends INVITE to Oracle® Enterprise Session Border Controller.
• Oracle® Enterprise Session Border Controller forwards INVITE to UA-B.
• UA-B sends 180 and SDP to Oracle® Enterprise Session Border Controller.
• Oracle® Enterprise Session Border Controller sends INVITE with SDP and metadata to SRS.
• SRS responds with OK to Oracle® Enterprise Session Border Controller.
• Oracle® Enterprise Session Border Controller sends 180 with SDP to UA-A.
• RTP stream initiated between Oracle® Enterprise Session Border Controller and UA-A.
• RTP stream initiated between Oracle® Enterprise Session Border Controller and UA-B.
• RTP stream initiated between Oracle® Enterprise Session Border Controller and SRS.
• UA-B responds with OK to Oracle® Enterprise Session Border Controller.
• Oracle® Enterprise Session Border Controller forwards OK to UA-A.
• Oracle® Enterprise Session Border Controller sends re-INVITE with SDP and metadata 
 changes to SRS.
• SRS responds with OK to Oracle® Enterprise Session Border Controller.
• UA-A sends BYE to Oracle® Enterprise Session Border Controller.
• Oracle® Enterprise Session Border Controller responds with OK to UA-A.
• Oracle® Enterprise Session Border Controller sends BYE to UA-B.
• UA-B responds with OK to Oracle® Enterprise Session Border Controller.
• Oracle® Enterprise Session Border Controller sends BYE to SRS.
• SRS responds with OK to Oracle® Enterprise Session Border Controller.