SIP Port Mapping Configuration
You configure the SIP port mapping feature on a per-realm basis using the SIP interface configuration. Configure the port map range on the SIP interface for the realm where the registrar/softswitch resides. Port mapping is only applied when the access/ingress realm has registration caching and/or HNT enabled.
The range of SIP mapping ports must not overlap the following:
- Configured SIP port, which might be used for signaling messages not associated with a registered endpoint.
- Port range defined for steering pool configuration using the same IP address as the SIP interface. If overlap occurs, the NAT table entry for the steering port used in a call prevents SIP messages from reaching the host processor.
To configure SIP port mapping: