Chapter 9 SIP
P-2304R-P1 Series User’s Guide
110
Figure 56
SIP Redirect Server
9.1.5.4 SIP Register Server
A SIP register server maintains a database of SIP identity-to-IP address (or domain name)
mapping. The register server checks your user name and password when you register.
9.1.6 RTP
When you make a VoIP call using SIP, the RTP (Real time Transport Protocol) is used to
handle voice data transfer. See RFC 1889 for details on RTP.
9.1.7 NAT and SIP
The ZyXEL Device must register its public IP address with a SIP register server. If there is a
NAT router between the ZyXEL Device and the SIP register server, the ZyXEL Device
probably has a private IP address. The ZyXEL Device lists its IP address in the SIP message
that it sends to the SIP register server. NAT does not translate this IP address in the SIP
message. The SIP register server gets the ZyXEL Device’s IP address from inside the SIP
message and maps it to your SIP identity. If the ZyXEL Device has a private IP address listed
in the SIP message, the SIP server cannot map it to your SIP identity. See
for more information about NAT.
Use a SIP ALG (Application Layer Gateway), Use NAT, STUN, or outbound proxy to allow
the ZyXEL Device to list its public IP address in the SIP messages.
9.1.7.1 SIP ALG
See
Содержание P-2304R
Страница 1: ...www zyxel com P 2304R P1 Series VoIP Station Gateway User s Guide Version 3 60 10 2006 Edition 1...
Страница 2: ......
Страница 8: ...Contents Overview P 2304R P1 Series User s Guide 8...
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Страница 32: ...Chapter 1 Introducing the ZyXEL Device P 2304R P1 Series User s Guide 32...
Страница 40: ...Chapter 2 Introducing the Web Configurator P 2304R P1 Series User s Guide 40...
Страница 73: ...73 PART II Network WAN 75 LAN 85 NAT 97...
Страница 74: ...74...
Страница 105: ...105 PART III VoIP SIP 107 Phone 121 Phone Book 129...
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Страница 116: ...Chapter 9 SIP P 2304R P1 Series User s Guide 116 Figure 60 VoIP SIP SIP Settings Advanced...
Страница 128: ...Chapter 10 Phone P 2304R P1 Series User s Guide 128...
Страница 134: ...Chapter 11 Phone Book P 2304R P1 Series User s Guide 134...
Страница 135: ...135 PART IV Security and Management Firewall 137 Content Filter 145 Static Route 149 Bandwidth MGMT 153 Remote MGMT 165...
Страница 136: ...136...
Страница 144: ...Chapter 12 Firewall P 2304R P1 Series User s Guide 144...
Страница 148: ...Chapter 13 Content Filter P 2304R P1 Series User s Guide 148...
Страница 152: ...Chapter 14 Static Route P 2304R P1 Series User s Guide 152...
Страница 173: ...173 PART V Maintenance and Troubleshooting UPnP 175 System 187 Logs 195 Tools 209 Troubleshooting 215...
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Страница 186: ...Chapter 17 UPnP P 2304R P1 Series User s Guide 186...
Страница 194: ...Chapter 18 System P 2304R P1 Series User s Guide 194...
Страница 208: ...Chapter 19 Logs P 2304R P1 Series User s Guide 208...
Страница 220: ...Chapter 21 Troubleshooting P 2304R P1 Series User s Guide 220...
Страница 222: ...222...
Страница 228: ...Appendix A Product Specifications P 2304R P1 Series User s Guide 228...
Страница 258: ...Appendix E SIP Passthrough P 2304R P1 Series User s Guide 258...
Страница 290: ...Appendix I Legal Information P 2304R P1 Series User s Guide 290...