Feature Description
The Domain Name System (DNS) is a network of servers that translates numeric IP addresses into readable, hierarchical Internet addresses, and vice-versa. The DNS proxy allows you to configure one or more proxy servers for resolving the host names to their IP address. The DNS proxy resides within the SMF.
When you query for the host name, the SMF sends the DNS queries to the configured DNS server through the DNS proxy server to fetch a maximum of two P-CSCF IP addresses. The resolved IP addresses are then sent back to the DNS client. This operation helps in resolving the Fully Qualified Domain Name (FQDN) of the P-CSCF. The SMF allows configuration of FQDN within the P-CSCF profile.