Welch-allyn Connectivity Server - Programmers guide Bedienungsanleitung PDF herunterladen (Seite 20)

16 WACS outbound HL7 protocols Welch Allyn Connectivity Server

Overview: Outbound HL7 Vital-sign Observations module

Patient vital-sign observations are transferred to the CIS server in this manner:

1. WACS is configured to accept requests on a preconfigured TCP port (usually in the

5600-5700 range).

2. Once a connection is established between the WACS system and the CIS, and once

the optional handshake and optional authentication are complete, The HL7 session

begins.

3. WACS sends observations to the CIS in one of these ways, depending on the

configured model:

• Push model: WACS sends information to the CIS at configurable intervals

• Pull model: WACS listens for incoming queries from the CIS

The system maintains an open connection for as long as possible. Connections can

be re-established if fatal errors or program crashes occur on either end. The WACS

master program uses exit codes and return values of the interface components to

manage child processes.

Acuity System

network

Clinical information system

(CIS)

SQL database

WACS

HL7 outbound

message

Patient data

10.250.100.201:5600

Initiate connection to

WACS IP + port

Outbound HL7 patient data messaging

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Welch-allyn Connectivity Server - Programmers guide Bedienungsanleitung Seite 20