| RTP Pass-through or Transcoding Using Media Loop |
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| Note |
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| The Media Antitrombone feature mainly applies to IP PBX scenarios, and is useful in situations where X-DMI cannot be passed through the SIP server. |
Media Antitrombone is similar to Direct Media method, but eliminates the dependency on X-DMI header to identify the direct media. Media Antitrombone instead uses SDP “C” line for the identification of the signaling loop. The following diagrams show a typical RTP pass-through (or transcoding) using media loop application, and then the same call flow using Media Antitrombone feature.