For those who are using their landlines, the off peak rate is going from 19 to 25 cents per minute.  Personally, I think this is a bit desperate for Telecom, what costs are increasing in telecommunications?  There was a lot of complaining when the rate went to 19 cents a few years back, I expect the same complaining.

I'm thinking that Telecom is aiming for those who either don't know any better, or are not up to using a prepaid calling card (such as my elderly father).

From http://www.stuff.co.nz/business/industries/3652834/Telecoms-landline-toll-calls-to-cost-more

The company's toll call revenues have been falling more steeply than any other major part of its business as more customers use internet phone services such as Skype, discount calling cards on sale at dairies, and a recent spate of cheap mobile offers for both overseas and national calls. 

Why don't they go for broke and just charge $1 a minute, they'd get the same income?