Summary

Recommendation ITU-T H.248.85 clarifies the interaction between the use of the ITU-T H.248 "loopback" and the Session Description Protocol (SDP) loopback attribute. Loopback is the process where media (including transport packets) received (Local Descriptor) on a Termination is sent from the sending side (Remote Descriptor) of the Termination without the media being passed between that Termination and other Terminations in the Context.