Message Transport All Messages are transmitted over TCP/IP using MLLP. Connections One socket connection is used for messages originating from CRIS. The port numbers to be used will be decided by mutual agreement. CRIS will initiate the connection (acting as client). Transport level Acknowledgements Each message will be acknowledged by the receiving system prior to delivery of the next message. Messages that are NAK’d will by logged by CRIS and should also be logged by the receiving system. Framing Characters Standard HL7 MLLP framing characters will be used, are <0B> start of message <1C> end of message In addition MLLP requires that each message be followed by the segment delimiter which is carriage return <0D>
Message Transport All Messages are transmitted over TCP/IP using MLLP. Connections One socket connection is used for messages originating from CRIS. The port numbers to be used will be decided by mutual agreement. CRIS will initiate the connection (acting as client). Transport level Acknowledgements Each message will be acknowledged by the receiving system prior to delivery of the next message. Messages that are NAK’d will by logged by CRIS and should also be logged by the receiving system. Framing Characters Standard HL7 MLLP framing characters will be used, are <0B> start of message <1C> end of message In addition MLLP requires that each message be followed by the segment delimiter which is carriage return <0D>
RIS_PD160_CRIS_HL7_Outbound_Interface_specification_v1.21.docx