RFC 3523 (rfc3523) - Page 2 of 6
Internet Emergency Preparedness (IEPREP) Telephony Topology Terminology
Alternative Format: Original Text Document
RFC 3523 IEPREP April 2003
1. Introduction
This document defines the topology naming conventions that are to be
used in reference to IEPREP phone calls. These naming conventions
should be used to focus the IEPREP Working Group (WG) during
discussions and when writing requirements, gap analysis and other
solutions documents.
There has been much confusion on the IEPREP list as well as within
each meeting about the topologies IEPREP is considering. Hopefully
this document will give each reader and author a reference set of
named architectures.
This memo attempts to be agnostic with regard to IP signaling or
control protocols (SIP, MEGACO, etc), as well as any underlying
Quality of Service (QOS) mechanisms (Diffserv, RSVP, NSIS, etc).
1.1 Motivation
Simply put, to get everyone referencing the same (named) topologies
in order to have useful and less confusing dialog to further this
working group's efforts.
1.2 Terms and Definitions
The following acronyms need to be exploded for clarity:
CSN = Circuit Switched Network
GW = Gateway (CSN to IP, or IP to CSN)
2. IEPREP Topologies
There are 4 often mentioned, but very little documented topologies
discussed within this WG's efforts so far. The following subsections
name and describe each of the topologies.
The 4 topologies are (quickly):
Topology "IP Bridging"
Topology "IP at the Start"
Topology "IP at the End"
Topology "End-to-End IP"
Polk Informational