Hyflux 6% perpetual callable 2020

[Layman A]

Thank you sgdividends.

So both are perpetual securities ( or perpetual bond ) with no DUE date, correct ?

I have some more doubts need clarification :

So come April 2018 when the call date of Hyflux 6% CPS ( Cummulative Preference Share ) is reached and Hyflux decided NOT to redeem the CPS but continue to pay the dividend, it will be a non event right ?  
(Unlike true BOND when they fail to redeem on the DUE date, it is considered a DEFAULT , and will cause a big problem.  )

The only difference that they will have to pay 8% interest going forward ,instead of the existing 6% right ?

And after the call date , if Hyflux manage to find the cash to redeem the 6% CPS , they can call it anytime right ?
( Presume they manage to find a buyer for the Tuas Spring )

Sorry to ask so many question.