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User A supports emind, calls B. Receives Early-Media header in 180 w/ URL. Generates secondary dialog to Early-Media URL. Uses unique RTP Type for media to detect final media later. Early media flows to user. User A detects RTP arriving with “final” RTP type. Switches to final media (no clipping). User B answers, begins speaking. User A ends dialog with early media endpoint. Proxy inserts Early-Media header. |