One-to-One Configuration
In the one-to-one scenario, a single customer SIP NAT is tied to a single backbone SIP NAT. On the backbone SIP NAT side, you configure the home proxy address to match the home address of the customer SIP NAT. On the customer side, you configure the home proxy address to match the home address of the backbone SIP NAT.
The following diagram illustrates the one-to-one SIP-NAT bridge configuration.