In a Server Option network configuration using a three-tier (gateway-enabled) SNA environment, the DirectConnect for z/OS Option acts as the gateway between LAN-based clients and the server. The DirectConnect for z/OS Option routes requests and replies between the client and server using two components: access services and the Transaction Router Service (TRS).
For more information on the DirectConnect for z/OS Option and its components, see the installation documentation for the DirectConnect for z/OS Option.
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