POS SOFTWARE
Local mode EFTPOS means if your internet line or telephone goes down, the EFTPOS can still work. Today's problem can be in various systems, e.g. Telstra, NBN, the bank, etc. and any one of them can cause the EFTPOS to stop. Then there is nothing anyone can do to help till it's fixed. The problem here is that every minute of downtime means to you much of that minute of lost revenue.
Make sure your EFTPOS has local mode.