P-2302R Series VoIP Station Gateway User's Guide

P-2302R Series User’s Guide
Table of Contents 12
Chapter 6
WAN Screens.......................................................................................................... 82
6.1 WAN Overview ...................................................................................................82
6.2 Configuring ISP ..................................................................................................82
6.2.1 Ethernet Encapsulation .............................................................................82
6.2.2 PPPoE Encapsulation ...............................................................................83
6.3 WAN IP Address Assignment .............................................................................85
6.4 Configuring WAN IP ...........................................................................................85
6.5 Configuring WAN MAC .......................................................................................88
Chapter 7
Introduction to VoIP ............................................................................................... 90
7.1 VoIP Introduction ................................................................................................90
7.2 Introduction to SIP ..............................................................................................90
7.2.1 SIP Identities .............................................................................................90
7.2.1.1 SIP Number .....................................................................................90
7.2.1.2 SIP Service Domain ........................................................................91
7.2.2 SIP Call Progression .................................................................................91
7.2.3 SIP Client Server ......................................................................................91
7.2.3.1 SIP User Agent ...............................................................................92
7.2.3.2 SIP Proxy Server .............................................................................92
7.2.3.3 SIP Redirect Server ........................................................................93
7.2.3.4 SIP Register Server ........................................................................93
7.2.4 RTP ...........................................................................................................93
7.3 NAT ....................................................................................................................94
7.3.1 NAT Example ............................................................................................94
7.3.2 NAT Types ................................................................................................95
7.3.2.1 Full Cone NAT .................................................................................96
7.3.2.2 Restricted Cone NAT .......................................................................96
7.3.2.3 Port Restricted Cone NAT ...............................................................97
7.3.2.4 Symmetric NAT ...............................................................................98
7.4 NAT and SIP ......................................................................................................99
7.5 SIP ALG .............................................................................................................99
7.6 Use NAT .............................................................................................................99
7.7 STUN ...............................................................................................................100
7.8 Outbound Proxy ...............................................................................................100
7.9 Voice Coding ....................................................................................................100
7.9.1 Pulse Code Modulation ...........................................................................101
7.9.2 G.711 .......................................................................................................101
7.9.3 G.729 ......................................................................................................101
7.10 PSTN Call Setup Signaling ............................................................................101
7.11 MWI (Message Waiting Indication) .................................................................101