Example 2 Without a NAT Firewall

The Oracle® Enterprise Session Border Controller SIP proxy is configured with the following changeable parameters:

useradd= IP address of the SIP UA or the source layer 3 IP address of Register message
userport= IP address port number of the SIP UA or the source layer 3 IP address port of Register message
Oracle® Enterprise Session Border Controller address=63.67.143.217
SIP endpoint=192.168.1.10
SIP endpoint IP address port=5060

SIP message Contact header:

Contact:<sip:0274116202@63.67.143.217; useradd=192.168.1.10; userport=5060; transport=udp>

For SIP, the softswitch responsibility is that the URI SD put in the Contact of the REGISTER message should be reflected in the 200-OK response to the REGISTER request. The Contact header of the response should have an expires header parameter indicating the lifetime of the registration.

The following example shows a Oracle® Enterprise Session Border Controller Send:

Contact: <sep: 0274116202@63.67.143.217 endpoint=192.168.1.10; useradd=10.1.10.21; userport=10000>;

The following examples shows the softswitch Respond:

Contact: <sep: 0274116202@63.67.143.217 endpoint=192.168.1.10; useradd=10.1.10.21; userport=10000>;  expires=360

The contact field for endpoint and firewall parameters only appear in the following:

Contact header of a REGISTER request sent from the Oracle® Enterprise Session Border Controller to the softswitch server
Contact header of a REGISTER response sent from the softwitch server to the Oracle® Enterprise Session Border Controller
Request-URI of an initial INVITE sent from the UT CSA server to the Oracle® Enterprise Session Border Controller

An active endpoint is deleted when it does not register within the registration-interval setting or receives a 401 Unauthorized.