Browse Prior Art Database

Session Initiation Protocol for Telephones (SIP-T): (SIP-T): Context and Architectures (RFC3372)

IP.com Disclosure Number: IPCOM000009753D
Original Publication Date: 2002-Sep-01
Included in the Prior Art Database: 2002-Sep-17
Document File: 24 page(s) / 50K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

A. Vemuri: AUTHOR [+2]

Abstract

The popularity of gateways that interwork between the PSTN (Public Switched Telephone Network) and SIP networks has motivated the publication of a set of common practices that can assure consistent behavior across implementations. This document taxonomizes the uses of PSTN-SIP gateways, provides uses cases, and identifies mechanisms necessary for interworking. The mechanisms detail how SIP provides for both 'encapsulation' (bridging the PSTN signaling across a SIP network) and 'translation' (gatewaying).

This text was extracted from an ASCII text file.
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Network Working Group� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � A. Vemuri

Request for Comments: 3372� � � � � � � � � � � � � � � � � � � � � � � � � Qwest Communications

BCP: 63� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � J. Peterson

Category: Best Current Practice� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � NeuStar

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � September 2002

� � � � � � � � � Session Initiation Protocol for Telephones (SIP-T):

� � � � � � � � � � � � � � � � � � � � � � Context and Architectures

Status of this Memo

� � This document specifies an Internet Best Current Practices for the

� � Internet Community, and requests discussion and suggestions for

� � improvements.� Distribution of this memo is unlimited.

Copyright Notice

� � Copyright (C) The Internet Society (2002).� All Rights Reserved.

Abstract

� � The popularity of gateways that interwork between the PSTN (Public

� � Switched Telephone Network) and SIP networks has motivated the

� � publication of a set of common practices that can assure consistent

� � behavior across implementations.� This document taxonomizes the uses

� � of PSTN-SIP gateways, provides uses cases, and identifies mechanisms

� � necessary for interworking.� The mechanisms detail how SIP provides

� � for both 'encapsulation' (bridging the PSTN signaling across a SIP

� � network) and 'translation' (gatewaying).

Table of Contents

� � 1.� Introduction . . . . . . . . . . . . . . . . . . . . . . . . .� 2

� � 2.� SIP-T for ISUP-SIP Interconnections� . . . . . . . . . . . . .� 4

� � 3.� SIP-T Flows� . . . . . . . . . . . . . . . . . . . . . . . . .� 7

� � 3.1 SIP Bridging (PSTN - IP - PSTN)� . . . . . . . . . . . . . . .� 8

� � 3.2 PSTN origination - IP termination� . . . . . . . . . . . . . .� 9

� � 3.3 IP origination - PSTN termination� . . . . . . . . . . . . . . 11

� � 4.� SIP-T Roles and Behavior . . . . . . . . . . . . . . . . . . . 12

� � 4.1 Originator . . . . . . . . . . . . . . . . . . . . . . . . . . 12

� � 4.2 Terminator . . . . . . . . . . . . . . . . . . . . . . . . . . 13

� � 4.3 Intermediary . . . . . . . . . . . . . . . . . . . . . . . . . 14

� � 4.4 Behavioral Requirements Summary� . . . . . . . . . . . . . . . 15

� � 5.� Components of the SIP-T Protocol . . . . . . . . . . . . . . . 16

� � 5.1 Core SIP . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

� � 5.2 Encapsulation� . . . . . . . . . . . . . . . . . . . . . . . . 16

� � 5.3 Translation� . . . . . . . . . . . . . . . . . . . . . . . . . 16

Vemuri & Peterson� � � � � � � Best Current Practice� � � � � � � � � � � � � � � � � [Page 1]

RFC 3372� � � � � � � � � � � � � � � � � � � � � � � � SIP-T� � � � � � � � � � � � � � � � � � � September 2002

� � 5.4 Support for mid-call signaling . . . . . . . . . . . . . . . . 17

� � 6.� SIP Content...