Guidelines for Usage of Interactive Connectivity Establishment (ICE) by non Session Initiation Protocol (SIP) Protocols
Jonathan M. Rosenberg · 2008
Interative Connectivity Establishment (ICE) has been specified as a NAT traversal mechanism for protocols based on the offer/answer exchange model. In practice, only the Session Initiation Protocol (SIP) has been based on the offer/answer model. This document defines a SIP independent subset of ICE, called NICE, which can be used with any protocol wishing to establish a direct host-to-host relationship through NAT. Protocol specifications need only reference this document, and include the object defined here in their messages, in order to achieve NAT traversal.