Ericsson W25 Bedienungsanleitung Seite 1

Ericsson W25 Fixed Wireless Terminal for WCDMA/HSDPA Mobile Networks Application Note: Fax over IP with Ericsson W25

10 1/221 02-FGB 101 327 Uen A - December 2006 The information below about the different IMT building blocks is extracted from [1]. 5.1.1 Subsystem Co

1/221 02-FGB 101 327 Uen A – December 2006 11 Each role is described below. The CSCF interfaces the MM for sending Charge Data Output (CDO), the ENU

12 1/221 02-FGB 101 327 Uen A - December 2006 towards the service layer. The S-CSCF decides whether an application server shall be invoked based on i

1/221 02-FGB 101 327 Uen A – December 2006 13 • Supports addressing and routing of multimedia sessions to and from CSCFs and interconnected PSTN no

14 1/221 02-FGB 101 327 Uen A - December 2006 6 Configuration For configuration purpose, the Ericsson W25 includes a CLI (Command Line Interface) and

1/221 02-FGB 101 327 Uen A – December 2006 15 7 References [1] Internal System Description IMT (IMS Multimedia Telephony) 3.01551-HSC 113 03/4 Uen [

16 1/221 02-FGB 101 327 Uen A - December 2006 8 Acronyms and Abbreviations CDMA Code Division Multiple Access CDO Charge Data Output CGSN Combined GP

1/221 02-FGB 101 327 Uen A – December 2006 17 RADIUS Remote Authentication Dial In User Service RAN Radio Access Network RFC Request for Comments RT

18 1/221 02-FGB 101 327 Uen A - December 2006 © Ericsson Enterprise AB 2006 – All Rights Reserved This document contains proprietary i

2 1/221 02-FGB 101 327 Uen A - December 2006 Contents 1 INTRODUCTION ... 3 1.1

1/221 02-FGB 101 327 Uen A – December 2006 3 1 Introduction This document gives a brief description of the Fax over IP implementation in the Ericsso

4 1/221 02-FGB 101 327 Uen A - December 2006 2 System Overview The system utilizes IP technology over fixed broadband networks and uses SIP for contr

1/221 02-FGB 101 327 Uen A – December 2006 5 2.1 Call Setup To setup a call the SIP protocol is used. The picture below shows the SIP signaling duri

6 1/221 02-FGB 101 327 Uen A - December 2006 3 Ericsson W25 The Ericsson W25 will work as a fax gateway between the POTS interface and the IP network

1/221 02-FGB 101 327 Uen A – December 2006 7 3.3.2 Echo Canceller To improve the fax transfer the Ericsson W25 also has an echo canceller in accorda

8 1/221 02-FGB 101 327 Uen A - December 2006 4 Access Network The access network for the Ericsson W25 (FWT) is the WCDMA/HSDPA Radio access network a

1/221 02-FGB 101 327 Uen A – December 2006 9 5 The VoIP System To enable a fax call a SIP server and Fax gateway is required. There is actually no n