ECI over TCP/IP
The IP ECI (IE) domain processes external call interface (ECI) requests that arrive from a CICS® client that is connected to CICS by a TCP/IP network. It attaches a mirror task to issue the appropriate program link request, and returns the results to the client.
Mirror tasks attached to service ECI requests have the facility type of SOCKET in their association data. For information about tracking origin data, see Association data.