Dynamic Configuration

Dynamic configuration of SIP port mapping can cause disruption in service for existing registration cache entries; depending on the changes made to the defined port map range. If the range of mapping ports is reduced, it is possible that SIP signaling messages from the registrar/softswitch realm will no longer be sent to the host processor because of the changes in the NAT Table ACL entries.

When the range of mapping ports is changed, any signaling ports in the free signaling port pool not allocated to a registration cache entry are removed from the pool. When an allocated signaling port that is no longer part of the defined mapping port range is released, it is not returned to the pool of free steering ports.

The administrator is warned when the changed configuration is activated after the port map range of a SIP interface has been changed.