Corporation Server User Manual

Creating B2BUA Applications
Programming Guidelines 4-3
It will clone the request with the following modifications:
The From header field of the new request has a new tag chosen by the container.
The To header field of the new request has no tag.
The Call-ID will be new (or duplicated in sameCallId is true)
The Record-Route and Via header fields are not copied. The container will add its
own Via header field to the request when it is actually sent outside the application
server.
For non-REGISTER requests, the Contact header field is not copied but is
populated by the container