FreePBX offers limited support for DUNDi trunks and additional manual configuration is required. The trunk name should correspond to the [mappings] section of the remote dundi.conf systems. For example, you may have a mapping on the remote system, and corresponding configurations in dundi.conf locally, that looks as follows:<br /><br />[mappings]<br />priv => dundi-extens,0,IAX2,priv:${SECRET}@218.23.42.26/${NUMBER},nopartial<br /><br />In this example, you would create this trunk and name it priv. You would then create the corresponding IAX2 trunk with proper settings to work with DUNDi. This can be done by making an IAX2 trunk in FreePBX or by using the iax_custom.conf file.<br />The dundi-extens context in this example must be created in extensions_custom.conf. This can simply include contexts such as ext-local, ext-intercom-users, ext-paging and so forth to provide access to the corresponding extensions and features provided by these various contexts and generated by FreePBX.