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The HL7 Outbound device passes HL7 messages to a downstream recipient after any other processing in the channel (like transforms) is complete. Note that what is passed is the actual HL7 message, not a file, and nothing is written to a database or destination such as a text file.

Select the device to see the setup and configuration options.

Destination

The Destination tab specifies the settings for the target destination to which the file should be sent.

The tab contains the following options:

  • Server Address: the address of the destination server.
  • Server Port: The port that should be used to access the destination.
  • Connection Timeout (sec): The number of seconds the connection should be idle before it times out.
  • Advanced TCP Options: use these options to set advanced behavior for the TCP connection. Choices include:
    • KeepAlive: Choose this to use KeepAlive messages. These messages are sent to verify that the link between the HL7 Inbound Device and the source HL7 message system is still operating.
    • NoDelay: Choose this option to disable the Nagle algorithm. This means that messages will be sent immediately, instead of being held until a transmission is of a certain size. This potentially improves system performance.
    • DontLinger: Select this option to close the socket gracefully without lingering.
  • Expect Acknowledgement (HL7 ACK): Whether or not Connexion should expect an ACK/NACK notification from the destination server.
  • Encoding: choose the type of encoding the incoming HL7 messages will use. The default is Western European (ISO).
  • Start of Message Character: This is the character/string that indicates the start of an HL7 message.
  • End of Message Character: This is the character/string that indicates the end of an HL7 message

Ack/Nack Error Condition

You can move the message to the error queue if the Ack/Nack Condition is met when the HL7 message is processed by the HL7 Outbound device.

Select the check box to enable the move to the error queue. In the Ack/Nack Condition field, set the condition(s) that must be met for the message to be moved to the error queue. By default, Connexion will match the value of the MSA-1 segment to either AE or AR, which are two common error codes set in the HL7 Inbound device (HL7 Inbound Device>Connection). If you have used other values, you can specify those instead.

If you click in the field, you can also choose any of the other functions available in Connexion. For a full description of all available functions, see the HL7 Transform device page.

Although all of the functions are available, some (such as LTrim) are not useful for evaluating an error condition. You should use a function that can be evaluated to a Boolean true/false condition for the Ack/Nack Error Condition.

If you wish to add an entry to the Connexion Error Log, in addition to moving the HL7 message to the error queue, select the check box.

 

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