External policy server

Hi

 

We want to use an external policy server to fetch the location string for a registering user, to be used in the IMS core for validation purposes.

 

I'm wondering if the SD will query the ext-policy-server for normal re-registrations. The config guide says:

 

CLF Re-registration
The Net-Net SBC will send a new REQ message to the CLF to request a new location
string if any of the following events occur:
1. The endpoint's contact address changes.
2. The SIP Register message's Call-ID header changes.
3. The endpoint's public IP Address or UDP port changes.
4. The endpoint connects to a different SIP interface, port, or realm on the Net-Net SBC than it did in the initial REGISTER message.