Terminology

Handshake
The back and forth messages in the RS232 standard perform the handshake of mutual acknowledgment. In addition, RS232 includes any and all conditions of the communication that occur between the computers. This includes flow control, commands (Communication flow control) and various parameters (Parallelism, tip-ring spacing, speed, etc.)

Negotiation
RS232 starts by transmitting a H/W-ID or the hardware identification of the data receiver, the 50e0806aeb vensyre
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