Rev. A07
PayLink-IP/232 Configuration Guide
Page 18 of 26
Send ACK to terminal after each received message
This setting should be enabled in two general situations:
•
where the payment terminal expects an ACK string to follow the transmission of data, and the payment pro-
cessing server does not send that string or,
•
where delays in transmission time would lead to the payment processing server’s ACK string being received
late by the terminal, causing the terminal to time out.
Figure 18: Data flow — “Send ACK” enabled