Appendix L SIP
339
Nortel Business Secure Router 252 Configuration — Advanced
Figure 163
Business Secure Router SIP ALG
SIP ALG and NAT
The Business Secure Router dynamically creates an implicit port forwarding rule
for SIP traffic from the WAN to the LAN.
The SIP ALG on the Business Secure Router supports all NAT mapping types,
including
One to One
,
Many to One
,
Many to Many Overload
and
Many One
to One
.
SIP ALG and firewall
The Business Secure Router creates an implicit temporary firewall rule for the
dynamic RTP port on the WAN to the SIP client device on the LAN. The firewall
rule is created for both directions to allow voice packets. The firewall rule is
deleted when the call is terminated.
SIP ALG and Multiple WAN
When the Business Secure Router has two WAN ports and uses the second
highest priority WAN port as a back up, it drops SIP connections when the
primary WAN port connection fails. The Business Secure Router does not
automatically change the SIP connection to the secondary WAN port.
Signaling session
over UDP port 5060
Audio session using RTP
Содержание 252
Страница 13: ...Contents 13 Nortel Business Secure Router 252 Configuration Advanced SIP Register Server 337 RTP 337 Index 341 ...
Страница 14: ...14 Contents NN47923 501 ...
Страница 20: ...20 Figures NN47923 501 ...
Страница 24: ...24 Tables NN47923 501 ...
Страница 30: ...30 Preface NN47923 501 ...
Страница 42: ...42 Chapter 1 Getting to know your Nortel Business Secure Router 252 NN47923 501 ...
Страница 48: ...48 Chapter 2 Introducing the SMT NN47923 501 SMT menus at a glance Figure 6 SMT overview ...
Страница 72: ...72 Chapter 3 WAN and Dial Backup Setup NN47923 501 ...
Страница 80: ...80 Chapter 4 LAN setup NN47923 501 ...
Страница 84: ...84 Chapter 5 Internet access NN47923 501 ...
Страница 98: ...98 Chapter 6 Remote Node setup NN47923 501 ...
Страница 102: ...102 Chapter 7 IP Static Route Setup NN47923 501 ...
Страница 130: ...130 Chapter 9 Network Address Translation NAT NN47923 501 ...
Страница 156: ...156 Chapter 12 SNMP Configuration NN47923 501 ...
Страница 178: ...178 Chapter 14 System information and diagnosis NN47923 501 ...
Страница 198: ...198 Chapter 15 Firmware and configuration file maintenance NN47923 501 ...
Страница 212: ...212 Chapter 17 Remote Management NN47923 501 ...
Страница 232: ...232 Appendix B Triangle Route NN47923 501 ...
Страница 252: ...252 Appendix D PPPoE NN47923 501 ...
Страница 256: ...256 Appendix E Hardware specifications NN47923 501 ...
Страница 266: ...266 Appendix F IP subnetting NN47923 501 ...
Страница 308: ...308 Appendix H NetBIOS filter commands NN47923 501 ...
Страница 332: ...332 Appendix K Brute force password guessing protection NN47923 501 ...