Hi, Today i want to share about jPOS custom message interchange specifications. When we talk about ISO-8583 over socket messaging, there are many interchange specifications. It is very important to know the interchange specifications, so we can determine a message for every single request/response. Once we have a binary representation of a given ISO-8583 message, we have to transmit it over the wire using some communication protocol, for example TCP/IP, UDP/IP, SSL, etc. The communication protocol is not part of ISO-8583 definition, so each vendors may have different communication protocol.
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