The combination of narrowband applications with broadband transport may be
enabled with a tri-level nodal communications architecture including a
call control node having both switching intelligence and narrowband
switching fabric, a plurality of connection control nodes having
broadband switching fabric and an intermediate node for interworking
between the call control node and the plurality of connection control
nodes. The intermediate node includes a database providing an indication
of which format(s) of multiple formats a given connection control node
uses. When an incoming communication arrives to/from a specific
connection control node, the database is consulted to ascertain the
corresponding particular format(s) used by that specific connection
control node. Accordingly, the incoming communication may be translated
responsive to the ascertained particular format(s).