ABBYY Recognition Server can use the Named Pipes or TCP/IP protocols for connections among its components.
By default, the Named Pipes protocol is used via port 445.
It is possible to change the protocol to TCP/IP. In this case the ports are chosen by the administrator and are defined in the Windows registry.
Detailed instruction on how to change your connection protocol can be found in the Connection Settings article of the ABBYY Recognition Server Help file.