ZyXEL Communications P-2002 - Manual (Page 12)

P-2002 Series User’s Guide
12 Table of Contents
3.2 General Setup ....................................................................................................35
3.2.1 Domain Name ...........................................................................................35
3.3 General Setup Configuration ..............................................................................35
3.4 Configuring Password ........................................................................................36
3.5 Pre-defined NTP Time Servers List ....................................................................37
3.6 Configuring Time Setting ....................................................................................37
Chapter 4
Ethernet Screens.................................................................................................... 41
4.1 ETHERNET Overview ........................................................................................41
4.1.1 IP Address and Subnet Mask ...................................................................41
4.1.2 DNS Server Address Assignment .............................................................41
4.1.3 PPPoE Encapsulation ...............................................................................42
4.2 Configuring Ethernet ..........................................................................................42
4.3 Configuring the Ethernet Management Port .......................................................44
Chapter 5
Introduction to VoIP ............................................................................................... 45
5.1 Introduction to VoIP ............................................................................................45
5.2 Introduction to SIP ..............................................................................................45
5.2.1 SIP Identities .............................................................................................45
5.2.1.1 SIP Number .....................................................................................45
5.2.1.2 SIP Service Domain ........................................................................45
5.2.2 SIP Call Progression .................................................................................46
5.2.3 SIP Servers ...............................................................................................46
5.2.3.1 SIP User Agent ...............................................................................46
5.2.3.2 SIP Proxy Server .............................................................................47
5.2.3.3 SIP Redirect Server ........................................................................47
5.2.3.4 SIP Register Server ........................................................................48
5.2.4 RTP ...........................................................................................................48
5.3 NAT ....................................................................................................................48
5.3.1 NAT Example ............................................................................................49
5.3.2 NAT Types ................................................................................................49
5.3.2.1 Full Cone NAT .................................................................................50
5.3.2.2 Restricted Cone NAT .......................................................................51
5.3.2.3 Port Restricted Cone NAT ...............................................................52
5.3.2.4 Symmetric NAT ...............................................................................52
5.4 NAT and SIP ......................................................................................................53
5.4.1 SIP ALG ....................................................................................................53
5.4.2 Use NAT Address on SIP and RTP ..........................................................53
5.4.3 STUN ........................................................................................................54
5.4.4 Outbound Proxy ........................................................................................54
5.5 Pulse Code Modulation ......................................................................................54