Quick links:
Product Overview
Installation
Settings and Administration
ADSL
SIP Support
Telephone ports
Network
Firewall
Wireless
VPN
Misc
Licenses
Troubleshooting
This shows you the differences between two versions of the page.
sip:fent [2010/11/09 11:42] tibor |
sip:fent [2010/11/09 11:49] (current) tibor |
||
---|---|---|---|
Line 2: | Line 2: | ||
The Internet Gate can enable SIP connectivity for remote users that use NAT devices without SIP support. It can adapt to characteristics of remote NAT devices. | The Internet Gate can enable SIP connectivity for remote users that use NAT devices without SIP support. It can adapt to characteristics of remote NAT devices. | ||
+ | |||
+ | **Using FENT you can allow people behind non-SIP-capable NAT firewalls to register on your Internet Gate's SIP server.** | ||
:!: You might need to purchase a [[:license]] to be able to use FENT in your unit. | :!: You might need to purchase a [[:license]] to be able to use FENT in your unit. | ||
Line 7: | Line 9: | ||
You configure FENT on the [[:web GUI:Advanced SIP Settings]] page. | You configure FENT on the [[:web GUI:Advanced SIP Settings]] page. | ||
- | FENT sends keep-alive packets to remote SIP clients behind non-SIP-capable firewalls to keep the SIP communications channel free to them. The keep-alive packets are SIP messages that are sent more often than the remote firewall's timeout. | + | FENT sends keep-alive packets to remote SIP clients behind non-SIP-capable firewalls to keep the SIP communications channel open to them. The keep-alive packets are SIP messages that are sent more often than the remote firewall's timeout. |
{{:sip:fent_1.png|Far End NAT Traversal}} | {{:sip:fent_1.png|Far End NAT Traversal}} | ||
Line 16: | Line 18: | ||
You can enable both methods, then the REGISTER method is tried first and if it does not work properly the OPTIONS method is used. | You can enable both methods, then the REGISTER method is tried first and if it does not work properly the OPTIONS method is used. | ||
+ | ===== Shortest media path ===== | ||
+ | By enabling **Detect endpoints behind same NAT** you allow SIP clients behind the same remote NAT making local calls to each other to send media locally between them on that LAN. | ||
+ | |||
+ | {{:sip:fent_2.png|media on remote LAN}} | ||