The IP Office Branch solution uses protocol interactions between the IP Office in the branch and solution components in the Avaya Aura® core as well as in other parts of the enterprise network. If the network includes any firewalls between the branch and the rest of the enterprise, then the appropriate ports must be opened on those firewalls to enable necessary traffic to enter.
If the deployment includes centralized users, you must also open the appropriate ports on the firewall to enable interactions between centralized SIP phones and other sites.
The following image shows the main ports used in the IP Office Branch solution.
Figure: Main ports in IP Office Branch solution
