SIP NSIS Interactions for NAT/Firewall Traversal

Document Type Expired Internet-Draft (individual)
Author Miquel Martin 
Last updated 2004-07-22
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


The NSIS NAT/FW NSLP provides traversal facilities for other application layer protocols. This document describes the interactions between SIP and NSIS signaling, to enable two NSIS aware SIP end applications to communicate normally through a network of NSIS Aware nodes, in a variety of NAT topologies.


Miquel Martin (

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