Introduction to the functions of each IP address of Uportal：
Access side IP: the IP address used by the terminal or web page to access the uportal network element,
that is, the address providing external access.
Core side signaling IP: IP address used for docking with core side HSS network element and ENS network
element.
Core side HTTP IP: the IP address used for HTTP message interaction with TMS network elements
Business distribution IP: the IP address used by user uportal to connect with SPG. Note: uportal serves
as both the south direction of SPG and the north direction of SPG, so this IP needs to communicate with
both the south and north direction of SPG.
Core side SIP signaling IP: it is used to process SIP signaling messages. The trigger rules on SCSCF are
configured to trigger on this address, and the call order push configured on CCF is also configured to push
on this address.
