pwner: The issue with MTR fees is that they will naturally form a baseline price for calls between networks. yes you might have some sort of bundle that will allow you to get calls bellow cost due to making up revenue from some other stream. But if network A has to pay 12c per min to terminate calls on network B they will never have a casual retail rate bellow 12c per min otherwise it would be very easy for someone from network B to very legally make alot of continuous phone calls from a network A mobile they purchased to a number in their own network B and therefore gain alot of income and financially cripple its competitor.
This is most certainly not the case. $10 TXT and Non Stop TXT has been all the proof you need of this. Telecom are paying Vodafone somewhere in the vicinity of 9c per SMS to terminate these messages, on paper many of these customers are delivering them a net loss.
I used to get unlimited offpeak calling to any mobile or landline on my Vodafone mobile for $19.95 per month, this would have also lost the company money when MTR's were well over 30cpm.
The whole argument about it being a benchmark that pricing can't drop below is flawed.