Would it be reasonable to exptrapolate that if they are...

Would it be reasonable to exptrapolate that if they are re-ordering in 2H FY18, then majority of these 3000 units plus the original 1ooo will be installed and generating revenue?

While there is a difference between the mix - symetric/asymetric, 1000 - 3000 units is still a 300% increase. Good indication of momentum.

Finally, there it is again - more than one deal imminent, plus finalisation of monster opportunity:

"Additional orders are expected as recently closed and imminent deals begin to drive sales in their respective territories, and a global distribution agreement is finalised. With minor hardware changes now complete, additional reorders can be made to more easily scale as demand requires."

The re-reorder will be a significant increase on this.