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Tekelec's Transport Adapter Layer Interface (RFC3094)

IP.com Disclosure Number: IPCOM000005289D
Original Publication Date: 2001-Apr-01
Included in the Prior Art Database: 2001-Aug-21

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

D. Sprague: AUTHOR [+4]

Abstract

This document proposes the interfaces of a Signaling Gateway, which provides interworking between the Switched Circuit Network (SCN) and an IP network. Since the Gateway is the central point of signaling information, not only does it provide transportation of signaling from one network to another, but it can also provide additional functions such as protocol translation, security screening, routing information, and seamless access to Intelligent Network (IN) services on both networks.

This text was extracted from a ASCII Text document.
This is the abbreviated version, containing approximately 2% of the total text.

Network Working Group D. Sprague Request for Comments: 3094 R. Benedyk Category: Informational D. Brendes J. Keller

Tekelec April 2001

Tekelec's Transport Adapter Layer Interface

Status of this Memo

This memo provides information for the Internet community. It does not specify an Internet standard of any kind. Distribution of this memo is unlimited.

Copyright Notice

Copyright (C) The Internet Society (2001). All Rights Reserved.

IESG Note:

Readers should note that this memo presents a vendor's alternative to standards track technology being developed by the IETF SIGTRAN Working Group. The technology presented in this memo has not been reviewed by the IETF for its technical soundness or completeness. Potential users of this type of technology are urged to examine the SIGTRAN work before deciding to use the technology described here.

Abstract

This document proposes the interfaces of a Signaling Gateway, which provides interworking between the Switched Circuit Network (SCN) and an IP network. Since the Gateway is the central point of signaling information, not only does it provide transportation of signaling from one network to another, but it can also provide additional functions such as protocol translation, security screening, routing information, and seamless access to Intelligent Network (IN) services on both networks.

The Transport Adapter Layer Interface (TALI) is the proposed interface, which provides TCAP (Transaction Capability Application Part), ISUP (ISDN User Part), and MTP (Mail Transport Protocol) messaging over TCP/IP. In addition, TALI provides SCCP (Signalling Connection Control Part) Management (SCMG), MTP Primitives, dynamic registration of circuits, and routing of call control messages based on circuit location.

Sprague, et al. Informational [Page 1]

RFC 3094 Tekelec's Transport Adapter Layer Interface April 2001

Table of Contents

1. Introduction 4 2. Overview of the TALI Protocol 6 2.1 Traditional PSTN SS7 Networks 6 2.2 Converged SS7 Networks 8 2.3 TALI Protocol Stack Overview 10 2.3.1 An Alternate TALI Protocol Stack using the SAAL Layer 13 2.3.2 An Alternate TALI Protocol Stack using SCTP 15 2.4 Inputs to the TALI Version 1.0 State Machine 15 3. TALI Version 1.0 17 3.1 Overview of the TALI Message Structure 17 3.1.1 Types of TALI Fields 19 3.2 Detailed TALI Message Structure 20 3.2.1 TALI Peer to Peer Messages 20 3.2.1.1 Test Message (test) 20 3.2.1.2 Allow Message (allo) 21 3.2.1.3 Prohibit Message (proh) 21 3.2.1.4 Prohibit Acknowledgement Message (proa) 21 3.2.1.5 Monitor Message (moni) 22 3.2.1.6 Monitor Acknowledge Message (mona) 22 3.2.2 Service Messages 23 3.2.2.1 SCCP Service Message (sccp) 23 3.2.2.1.1 SCCP Encapsulation using TALI 25 3.2.2.2 ISUP Service Message (isot) 27 3.2.2.2.1 ISUP Encapsulation using TALI 27 3.2.2.3 MTP3 Service Message (mtp3) 28 3.2.2.3.1 MTP3 Encapsulation using TALI 29 3.2.2.4 SAAL Service Message (saal) 30 3.2.2.4.1 MTP3 and SAAL Peer to Peer Encapsulation using TALI 31 3.3 TALI Timers 34 3.3.1 T1 Timer...