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Latching: Hosted NAT Traversal (HNT) for Media in Real-Time Communication

Document type: Replaced Internet-Draft (individual)
Document stream: No stream defined
Last updated: 2013-02-20 (latest revision 2012-10-22)
Intended RFC status: Unknown
Other versions: (expired, archived): plain text, pdf, html

Stream State:No stream defined
Document shepherd: No shepherd assigned

IESG State: Replaced by draft-ietf-mmusic-latching
Responsible AD: (None)
Send notices to: No addresses provided

This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found here:


This document describes behavior of signalling intermediaries in RTC deployments, sometimes referred to as Session Border Controllers (SBCs), when performing Hosted NAT Traversal (HNT). HNT is a set of mechanisms, such as media relaying and latching, that such intermediaries use to enable other RTC devices behind NATs to communicate with each other. This document is non-normative, and is only written to explain HNT in order to provide a reference to the IETF community, as well as an informative description to manufacturers, and users.


Emil Ivov <>
Hadriel Kaplan <>
Dan Wing <>

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid)