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Next Previous Contents VoIP Howto Roberto Arcomano bertolinux@galactica.it v1.0 - 12 November 2025 Voice Over IP is a new communication means that let you telephone with Internet at almost null cost. How this is possible, what systems are used, what is the standard, all that is covered by this Howto. Web site http://web.tiscalinet.it/bertolinux contains latest version of this document. 1. Introduction 1.1 Introduction 1.2 Copyright 2. Background 2.1 The past 2.2 Yesterday 2.3 Today 2.4 The future 3. Overview 3.1 What is VoIP? 3.2 How does it work? 3.3 What is the advantages using VoIP rather PSTN? 3.4 Then, why everybody doesn't use it yet? 4. Technical info about VoIP 4.1 Overview on a VoIP connection 4.2 Analog to Digital Conversion 4.3 Compression Algorithms 4.4 RTP Real Time Transport Protocol 4.5 RSVP 4.6 Quality of Service (QoS) 4.7 H323 Signaling Protocol 5. Requirement 5.1 Hardware requirement 5.2 Hardware accelerating cards 5.3 Hardware gateway cards 5.4 Software requirement 5.5 Gateway software 5.6 Gatekeeper software 5.7 Other software 6. Cards setup 6.1 Quicknet PhoneJack 6.2 Quicknet LineJack 7. Setup 7.1 Simple communication: IP to IP 7.2 Using names 7.3 Internet calling using a WINS server 7.4 A big problem: the masquering. 7.5 Using Linux 7.6 Setting up a gatekeeper 7.7 Setting up a gateway 8. Bandwidth consideration 9. Useful links Next Previous Contents

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