5.Web Server Integration
The SBC can use a web server as application server. This way you can use PHP, ASP and anything you like to implement the logic for your SIP traffic. For example, if you want to redirect a call to a specific gateway, you can do this easily on the web server. The SBC will just use the results that come from the web server to the further processing of the SIP request.
The SBC divides the interface to the application server into three
areas:
•Authentication. Incoming requests are checked against a password list. If the user agent is not present in the local internal database, the SBC talks to the application server to update the information.
•Registration. When a user agent wants to register its contact, the SBC updates the registration information in the application server.
•Calls. When a new call is requested by a user agent, the SBC talks to the application server. The application server may route the call, change From and
The filter talks asynchronously to the web server. That means, the processing of other requests is not blocked by the request. Also the processing of other web requests is also not blocked by another web re- quest. The request is only made at the beginning of a call; further mes- sages inside the call will not cause additional web requests.
Please use the complete form for the server settings, including the “http://” in front of the host name. The filter supports only DNS A resolution for locating the web server; no http proxy is allowed.
5.
