RFC 3136 · INFORMATIONAL · 2001
SUN · 14 JUN 2026
The SPIRITS Architecture
Overview
RFC 3136, “The SPIRITS Architecture”, is an Informational document published in June 2001 by L. Slutsman, I. Faynberg, H. Lu, M. Weissman. The canonical text is published by the RFC Editor.
Abstract
This document describes the architecture for supporting SPIRITS services, which are those originating in the PSTN (Public Switched Telephone Network)and necessitating the interactions between the PSTN and the Internet. This memo provides information for the Internet community.
What “Informational” means
Published for the general information of the community. It does not define an IETF standard and carries no standards-track status.
Read this RFC
The canonical text of RFC 3136 is hosted at rfc-editor.org. Available in TXT,HTML.
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