Latency, Jitter and Lost Packets

 Latency, Jitter and Lost Packets

With the above four scenarios in mind the solution relies on the quality of the connections from the POS Till, POS Server and the Devices to the Indigo Server as well as from the Indigo Server to the iVeri Gateway. If any of these connections suffers from high latency or dropped packets the solution as a whole will not perform as required so it is imperative that the networks on which the solution is deployed have adequate bandwidth as well as that they have low latency and zero packet losses. This means that if the networks are shared with other equipment it is important to understand what that equipment is doing and when it is doing it so that it doesn’t impinge on the operational requirements of the Indigo Solution.

The interaction between the Device and the Indigo server amounts to approximately 6K bytes which is spread over about 15 seconds which includes the activation of the device, inserting the card, choosing the account type, entering the PIN, performing the transaction and then completing the transaction to the device. As a rough guide this means that one needs 0.4KB/s of bandwidth per transaction that is being processed. The bandwidth requirements are therefore modest but what is critical is the latency, jitter and dropped packets between the Device and the Indigo Server.