Snom 4S manual Outbound Proxy List

4.

[ S N O M 4 S N A T F I L T E R ]

4.6 Outbound Proxy List

In addition to the previously mentioned outbound proxy you may specify a number of dedicated outbound proxies. This feature is typically being used in the following scenarios:

•Integration of PSTN gateway. If you set the outbound proxy of the PSTN gateway to the filter, it can easily redirect all requests to the proxy. However, when the proxy wants to route a call back through the filter, it must know that the request must be routed to the PSTN gateway. If you set up a DNS name for the PSTN gateway and set the destination to the filter, you can elegantly redirect all outgoing calls to the PSTN gateway trough the filter first. BTW the filter can then take care of such problems as UDP fragmentation and multiple 2xx responses.

•Replace PSTN gateway with other gateways, for example ITSP service or IP gateways.

•Multiple-Domain hosting: If you are using several proxies for differ- ent domains, the filter can redirect the requests to the right proxy automatically. This approach is limited to a maximum of ten do- mains per filter; for additional domains you need to use the web server integration mentioned above.

44 • Configuration