Lancom 1722 VOIP, User Manual

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LANCOM 1722 VoIP – LANCOM 1724 VoIP
Contents
6
EN
Contents
1 Introduction 10
1.1 How does ADSL and ADSL 2+ work? 10
1.2 Which use does VPN offer? 12
1.3 Firewall 13
1.4 Voice over IP 15
1.4.1 Example applications 15
1.4.2 The central position of the LANCOM VoIP Router 19
1.5 Call switching: Call routing 22
1.5.1 SIP proxy and SIP gateway 23
1.5.2 User registration at the SIP proxy 23
1.5.3 Number translation at network transitions 27
1.5.4 The Call Manager 28
1.5.5 Making telephone calls with the LANCOM VoIP Router
29
1.5.6 VoIP characteristics of the LANCOM VoIP Routers 34
1.6 What can your LANCOM Router do? 36
2 Installation 40
2.1 Package contents 40
2.2 System preconditions 40
2.3 Introducing LANCOM Router 41
2.3.1 Status displays 41
2.3.2 The back of the unit 45
2.4 Hardware installation 46
2.5 ISDN interface configuration 48
2.5.1 Bus termination, life-line support and power relay 49
2.5.2 Protocol setting 51
2.5.3 ISDN connection timing 52
2.6 Software installation 52
2.6.1 Starting LANCOM setup 53
2.6.2 Which software should you install? 53